Download latest version:
Version 1.0 / sources

Old versions:
Version 0.4 / sources

Note: If you have an error concerning a file “MSCOMCTL.OCX”, please install this runtime.

If not present, the VB6 Runtime may also be needed.

a1ctl is a program able to control the fan speed of the Acer Aspire One netbooks, and do some useful other things. It was inspired by EEEctl, AsTray and some other programs available for the EEE PC series.

This program is a freeware, but I’ve spent countless hours making it, so if you like it consider making a donation to support my work.

Donate with PayPal!

– no installation needed
– small memory footprint (~5Mo)
– complete fan management, with stopped/slow/auto fan modes
– support newest bios, from v0.3109 to v0.3309
– CPU speed management (XP only)
– fast screen resolution changes, with 1024×768 scrolled and downscaled modes (XP only)
– can enable/disable webcam/ethernet/wifi to reduce power usage
– can be started with windows automatically
– option to prevent HDD clicks
– show temperature & battery in tray icon
– customizable icons & colors via .ini file
– integrated ACPIEC driver patching to prevent log writing

Q- What is the “Prevent HD clicking” option?
A- Some hard drives used in the A1 does some frequent clicking noise, due to [badly] aggressive power management that parks the HD heads whenever it’s possible, to reduce power usage and prevent potential damage from shocks. While this may be a good thing in a general case, when it occurs too frequently it dramatically reduce the lifespan of the drive and may be annoying due to the noise generated. This option almost disable the hard drive power management to prevent this clicks, thus preserving your ears and you drive’s lifespan at the cost of a little more power consumption. Activating this option is not recommended for the A1 models with SSD drives.

Q- Why the fan is stopped when I set it to slow mode?
A- Slow mode can’t be activated when the system temperature is under 37°c, thus the fan is stopped until this threshold is reached, whatever your temperature settings for slow mode are.

Q- Why do I need to patch my acpiec.sys driver?
A- You don’t need to patch this file to make the program run correctly, however due to this chatty driver, some warnings are constantly written into a log file (due to the temperature polling) causing your hard drive to never spin down and consume power. If you own a SSD drive model, this may reduce its life span due to constant writing causing wear. That’s why it’s recommanded (and completely safe) to patch your acpiec.sys driver when asked. This operation can be completely reversed using the ‘unpatch’ button in the configuration dialog.


– 04/08/2009 – version 1.0
+ added custom resolution as .ini setting (downscaling is though
still limited to 1024×768 due to some restriction)
+ added custom EC values for fan control, with simple testing function
+ added custom device support
= updated values for newest BIOS versions
= fixed slow mode threshold
= fixed small bugs here and there

– 30/10/2008 – version 0.4
+ added acpiec.sys driver patch
+ added 1024×768 downscaled mode restoration at startup/wake up
= fixed fan slow mode threshold control
= tweaked fonts some more
= fixed battery remaining time
= fixed single icon mode

– 26/10/2008 – version 0.3 beta
+ now working on Windows Vista (CPU & Screen management are
disabled though)
+ improved font readability for system tray icons
+ added advanced configuration settings in .ini file (text
colors, icon modes…)
+ added support for the 2nd webcam model present in A1
= fixed slow mode causing fan to be full speed in some cases
= fixed other miscellaneous bugs

– 07/10/08 – version 0.2 beta
+ added CPU management
+ added 1024×768 scrolled and downscaled modes
+ added battery information and system tray icon
+ added possibility to activate/desactivate ethernet/wifi/webcam
+ added hard disk clicking prevention
+ added manual fan management modes
+ added display of temperature directly in the system tray icon
= fixed back from sleep/hibernation problems
= fixed fan management

– 25/09/08 – version 0.1 beta
* first public release

413 Comments Add your own

  • 1. Andrew  |  October 30, 2008 at 8:55 am

    Thank you, your program is very, very useful.

    Perhaps you should consider writing in to liliputing or AspireOneUser, it’s not the publicity, it’s the help you would offer to many users like me.

    Had to do some Google magic to finally find your program 🙂

  • 2. Laurent  |  October 31, 2008 at 2:58 pm

    Tiny typos : Megahertz abbreviation is MHz and not Mhz (notice the uppercased H). Thanks in advance on behalf of Mr Hertz !

    • 3. longjohn  |  December 21, 2009 at 7:09 am

      Is that so?

      Do you spell it MegaHertz too?

      • 4. Systemic  |  January 3, 2010 at 12:35 am

        No, of course not. MHz is to Megahertz as GB is to Gigabyte.

  • 5. BB  |  October 31, 2008 at 7:00 pm

    Autostart under Vista does not work (check the AddStartupShortcut).

    Very nice software, thanks 😉

  • 6. Steve  |  October 31, 2008 at 9:46 pm

    When I click on a1ctl to run it I get a message:
    Component “MSCOMCTL.OCX” or one of its dependencies is not correctly registered: file is missing or invalid

    • 7. mikr  |  February 4, 2010 at 8:50 pm

      I have the same problem. I downloaded the 2 microsoft files, but cannot get it to work.

      This problem started afte3r 7 months of use. Any suggestions as to why?

      • 8. leo  |  April 30, 2010 at 10:47 pm

        having the same problem, instaled and downloaded the 2 files but still nothing. same error.

    • 9. jawes  |  August 12, 2011 at 3:12 am

      having the same problem, instaled and downloaded the 2 files but still nothing. same error.

      • 10. Robert  |  December 13, 2011 at 7:31 pm

        Same problem here, Acer 8942g. DL both files, but it still pops up with the same error.

  • 11. Mario  |  November 1, 2008 at 5:18 am

    Best feature yet (after 2 minutes): Changing screen resolutions.
    F1 = 1024*600
    F2 = 1024*768 ws. Virtual
    F3 = 1024*768 ws. Scaling

    Questiton: What’s that patch for ?

    Last words: Good work & Thanx A Lot.- greetings from Berlin, Germany comming from Mario

  • 12. Noda  |  November 1, 2008 at 2:14 pm

    Laurent> Oops, it will be corrected in next version 😉

    BB> so adding a shortcup to the startup entry of the startup menu doesn’t work on Vista? :/ I don’t have Vista so it will be tough to correct this one, but you can always create the shortcut yourself.

    Steve> You need to install the “Microsoft Common Control Runtime”, available on the Microsoft website.

    Mario> for the patch, check the FAQ 😉 I’ll think about those shorcuts for the resolution change, thanks for your suggestion.

  • […] speziell für die Netbooks der Acer Aspire One Serie entwickelte Programm A1ctl.exe erlaubt es seinen Nutzern, ihre Hardware besser zu kontrollieren. Hat man es erstmal installiert, […]

  • 14. Rico  |  November 2, 2008 at 9:33 pm

    Great Work!

    It would be nice, if the color of the remaining batterytime will be adjustable … black/white.

  • […] the Linux equivalent!? -jf.) A1ctl is a small Windows utility that gives Acer Aspire One users more control over their hardware. […]

  • 16. marc  |  November 3, 2008 at 4:16 am

    This might a dumb question, but how do I install this app (in XP)? When I unpack it there is no executable file….

  • […] Mehr Infos und Download auf der Entwicklerseite. […]

  • 18. Noda  |  November 3, 2008 at 8:33 am

    Rico> it’s possible to change the colors, check the .ini file.

    marc> try another program to unpack it (like 7zip) cause you should have 3 .exe, 1 being a1ctl.exe

  • 19. A1ctl: Aspire One Control | Netbook News  |  November 3, 2008 at 10:20 am

    […] informazioni sul programma ed il link al download sono disponibili sul sito di Noda, l’utente di Blogeee.net creatore di questo software. […]

  • 20. Koe  |  November 3, 2008 at 12:04 pm

    I’m sorry. I have the same problem like Steve but i can’t find the “Microsoft Common Control Runtime” at Microsoft-Website or at google. Maybe you could you post the download-link?

  • 21. Koe  |  November 3, 2008 at 12:05 pm

    I’m sorry. I have the same problem like Steve but i can’t find the “Microsoft Common Control Runtime” at Microsoft-Website or at google. Maybe you could post the download-link?

  • 24. Frode  |  November 4, 2008 at 2:14 pm

    Thank you very much for the utility. By far the best fan control software I’ve seen for the AA1 so far. And also thank you very much for making it open source

  • 25. matrix321  |  November 5, 2008 at 6:44 pm

    Works fine ! Thank you !

  • 26. Gary  |  November 7, 2008 at 5:59 pm

    I got the MSCOMCTL.OCX and went to the microsoft runtime. I’ve run it, it says my system is updated, but still when I try to run a1ctl I get “Component ‘MSCOMCTL.OCX” or one of its dependencies not correctly registered: a file is missing or invalid”

    Any thoughts, please?

  • 27. Scott  |  November 8, 2008 at 4:44 pm

    Gary> I found this by googling the error message and came up with the link here: http://www.mp3-ripper.net/faq.htm#8

    I downloaded it and installed it and it fixed the problem. I had the same problem as you where I still got the error after installing the MS runtime.

    Hope this helps.

    • 28. Patrick  |  August 9, 2011 at 6:24 pm

      Worked for me too .. thanks.

  • 29. Forone  |  November 8, 2008 at 5:58 pm

    Thanks for this great tool. Looking forward to testing it in different situations.

  • 30. Z  |  November 8, 2008 at 7:54 pm

    I am running XP SP3, patched the acpiec as instructed but it still log errors.

  • 31. Gary  |  November 8, 2008 at 10:13 pm

    Scott: That worked, thank you very much!

    Noda: Thanks for the neat tool! In the downscaled video mode for 1024×768 resolution, does it pass all video requests through the software? Application speed seems to suffer while that’s on.

  • 32. rk  |  November 10, 2008 at 3:43 am

    i’ve been using your program for 2-3 weeks now and I’ve noticed that your program makes explorer.exe freeze from time to time. I can’t access the taskbar and I’d end up restarting/force quitting the program. On another note, sometimes my whole windows will freeze due to constant non-stop disk activity. I suspected this to be from enabling the “prevent HD clicks” option, so I turned it off. Afterwards, the same issue doesn’t occur as often anymore.

    I’m using XP pro SP3.
    Hope to hear from you soon.


  • 33. Noda  |  November 10, 2008 at 9:30 am

    Gary> yes, in 1024×768 downscaled mode the screen is resized by the intel drivers by software, so the window may stutter a little.

    rk> Are you sure it’s related to a1ctl? cause you’re the first person to have this problem (and a1ctl has been beta tested since 2 months).
    Usually problems like yours is due to a virus/trojan…

  • 34. Darpa  |  November 13, 2008 at 3:56 am

    I have thesame problem like “rk” but only if i am running from the battery, it works just fine if its pluged in

    About the virus/trojan my scanner scans my system daily

  • 35. bevoc  |  November 13, 2008 at 8:25 am

    can you make it lock the cpu at 1.2 GHz? vista hangs every 10 seconds under speedstep. bios does not help and we need the full funtion of eeectl. i own an eeepc 4g and its running faster than the ONE

  • 36. Kimixii  |  November 14, 2008 at 12:24 am

    Was running this program on XP SP3, ran GREAT, then I got Vista, and the AAO handles Vista wonderful, but it didnt like this program. Scotts link above fixed that. [http://www.mp3-ripper.net/faq.htm#8] In Vista, it seems like the fan is louder than ever. The problem with it is that it just runs TOO fast, not that its like super loud. With Vista using my CPU more at idle, the temp gets just high enough [~50*C] to tell the BIOS to kick the fan up a bit, which is really unnecasary. With this program now running in Vista, I have it set anywhere from 59C and lower to be on slow fan, and you cant even tell its on. But the good thing is, is that air is still blowing out fine, and thats perfect. This program is perfect, Im voting the #1 program for the Aspire One, without a doubt. Thanks Noda!

  • 37. Kimixii  |  November 14, 2008 at 1:13 am

    Noda just wanted to point out that in Vista, when you reboot, the User Control thing pops up and asks if you want to allow acces to devcon I believe, and when you hit allow, it just repeats it over and over. When I edit your a1ctl options in the startup folder, and try to startup a1ctl with admin rights, windows defender blocks it EVERY TIME, and as far as I can figure out you cant get it enabled. I will keep trying to figure it out though. The ONLY thing you can do, is click on the start menu button, and in the search bar type msconfig . Click continue to proceed. Now when the window pops up click on tools, then click on Disable User Account Control and click Launch. Restart your computer, and you wont get a prompt to allow a1ctl to run, and it will startup just fine in Vista. However, Vista will prolly never prompt you again for anything, but to me that is a great thing, its wayyy more like XP. And I mean if I am an administrator, why would I have to click continue for everything I open prompting me to press a button to prove im an administrator? So not only will A1ctl startup fine, but your getting rid of all those god aweful annoying prompts to continue.

  • 38. Jimmy  |  November 15, 2008 at 12:21 am

    Does this program work with the 3114 BIOS? Program starts up OK but changing the fan settings has no effect.

  • 39. onefan  |  November 15, 2008 at 4:10 am

    3307 is ok now?

  • 42. ESK  |  November 17, 2008 at 8:46 pm

    Same problem as Jimmy. On a v3114 BIOS there seems to be no such thing as a slow fan: it stays off until the Auto temp has been reached. Any ideas?

  • 43. feeble8  |  November 18, 2008 at 12:42 am

    still getting the “MSCOMCTL” error installed the runtime and restarted? any other thoughts? thanks!

  • 44. zeridos  |  November 18, 2008 at 11:33 am

    Very nice software, could you develop it for mac users?

  • […] I installed a new control utility for my Aspire One:  a1ctl.  It is similar to AA1FanControl in that it allows you to control the fan on your netbook, but […]

  • 46. Micheal  |  November 19, 2008 at 2:56 am

    Can this be used to change the clock to 900 instead of 800? The EEE users do it, I don’t see why we couldn’t.

  • […] you are an Aspire One owner, you should probably also have this highly functional utility. I don’t have the Aspire One any longer to test it with, but fear not: Brian Jarvis of UMPC […]

  • 48. RK  |  November 20, 2008 at 7:40 am

    Yes, I’m more than positive it’s related to this program. If it’s not directly the cause, then it’s at least having conflicts with something on my, and Darpa’s system. I have anti-virus and spyware running in the background always and have scheduled full system scans so I’m sure my system is running clean. There has yet been any crashes or unnatural behavior on my system. Only a1ctl causes abnormal activity.


  • 49. paul  |  November 20, 2008 at 7:54 am

    have you checked out BIOS 3307

  • 50. SteveL  |  November 20, 2008 at 9:32 pm

    Hi there, excellent application! I don’t know if there’s anything you can do about this but when using 1024×768 downscaled mode and a mouse pointer with trails setting on, you get a rectangular area full of garbage pixels that follows the mouse pointer.

  • 51. Dan  |  November 21, 2008 at 1:16 am

    To everyone having the MSCOMCTL.OCX error, this is what fixed the problem for me:


  • 52. Thomas  |  November 23, 2008 at 12:44 pm

    First I want to say that this is a woonderful tool!
    Although when I reinstalled XP after some troubles with my WLAN in Vista the program does not seem to work. It starts up and everything, but I can”t se the temp, and I can’t change the fanspeed. Everything else in the program works though. If I have it in autostart the temp shows 56C, but it stays there whatever I do, in 56C I mean. And I can still not change the fanspeed, so whan I restart the program I’m back to the beginning of the post. Any idea on a fix for this?

  • 53. Noda  |  November 25, 2008 at 8:35 am

    It seems some newer AAO use a new EC (Embedded Controller) chip that prevents a1ctl to control fan and retrieve temperature. I’ll try to investigate but I can’t promise anything since I don’t own one :/

  • 55. Mati  |  November 29, 2008 at 9:01 pm

    great apps many thx mate

    small request can you add Device 3G:

    no idea with info you need, send me mail and info with data you need to add 3G.


  • 56. nanao  |  November 29, 2008 at 9:45 pm

    I would like to clock the cpu to lowest possible(when idle reading text), that would require setting clock multiplier at 1x, which would run at ~133mhz. could you please tell me in which source file and where to try this? many thanks.

  • 57. nanao  |  November 30, 2008 at 1:32 am

    When start with windows is set, app is running but does not show UI in system tray, so there is no way to bring up the UI. Is this by design? Anyone else have this problem?

  • […] stronie projektu można wyczytać o […]

  • 59. AK  |  December 1, 2008 at 10:01 pm

    I have a runtime error

    WinIo.dl or something?

    Any suggestions?

  • 60. Richard - CCWH  |  December 2, 2008 at 2:17 pm

    A1Ctrl fonctionne parfaitement avec la version 3308 du Bios.
    Reste à fixer un bug avec les coches affichant la résolution choisie (downscaled ou pas) et la résolution effectivement affichée.

  • 61. Jordan  |  December 2, 2008 at 6:29 pm

    Anyone working on something like this for OSX? Having the fan going all the time in that OS is excruciating.

  • 62. MichelC  |  December 3, 2008 at 8:38 pm

    Hi, nice tool, a1ctl. Up to now, I used the device manager to switch off my unnecessary devices. Question: is it possible to switch off bluetooth as well via a1ctl? That would be really nice.


  • 63. MichelC  |  December 5, 2008 at 7:53 pm

    Hi, another question; the custom setting doesn’t seem to work. I have my fan settings between 60 and 70 degrees, but the fan keeps on running at temps around 50 degrees. Did I do something wrong?

  • 64. rene  |  December 9, 2008 at 11:41 pm

    I am having also a run time error #53

    file not found

  • 65. rene  |  December 9, 2008 at 11:53 pm

    solved runtime error

    just unpach everything in one folder and run the program. WinIo.dll is included.

  • 66. Rob  |  December 10, 2008 at 1:57 pm

    someone can overlock Atom under Vista? Will your software support this function, Noda?

  • 67. Mathieu  |  December 15, 2008 at 1:42 am

    This sofware is awesome!!!!!
    Great Job

  • 68. Simone  |  December 16, 2008 at 6:09 pm

    Great software!!! But i have a problem with acpiec.sys patching.
    After the patch was applied in System Event there is an error of this driver. (I have XP Home Edition).

  • 69. update  |  December 19, 2008 at 10:02 am

    update please, we are waiting, your the best

  • 70. wat  |  December 23, 2008 at 1:17 pm

    Because the windows still uses orginal acpiec.sys, patched driver is useless. You can see from eventviewer log.
    I manually patched acpiec.sys and save it by a temporary name. Then use safe mode – command promt and rename the temp file to acpiec.sys. It works for me.

  • 71. arvacon  |  December 27, 2008 at 2:24 pm

    Will you do something about the bios 3308,because I think that AA1ctl is not working with this bios..The fan start to working very quick and it is slowing down after a minute,but it is working all the time and never stops.The temperature is stack to the 43 and the fan control choices doesn’t work,even if you put this to off,it is still working..

  • 72. Dave  |  December 28, 2008 at 10:25 am

    Great program, but why does it change my XP power settings? I’d love for that to be optional.

  • 74. a happy Mom  |  December 28, 2008 at 8:44 pm

    You saved Christmas! We bought the Acer Aspire One for my daughter so she could do Webkinz.com. Turned out that we didn’t have sufficient resolution to run the web program. Thanks to your program, we are now able to make it work! Thanks. Heading directly to PayPal to convey our thanks more tangibly. Keep up the great work.

  • 75. Ed  |  December 30, 2008 at 9:56 am

    Similar to Rene, I am receiving Run time Error 53 WinIO not found. How do you fix this?


  • 76. Bomber664  |  January 2, 2009 at 4:34 pm

    Downscaling doen’t seem to work for me (I assume downscaling means if will compress the screen slightly). I always have to scroll. Any suggestions?

    Thanks for the product

  • 77. Dax  |  January 2, 2009 at 6:00 pm

    Having major problems with ACPIEC drive on my AAO. Details can be found here: http://www.aspireoneuser.com/forum/viewtopic.php?f=10&t=9120

    Any help would be appreciated!

  • 78. Chad  |  January 3, 2009 at 3:01 am

    I’d like some sort of indication on the task bar showing what the current CPU speed is, especially when using DYNAMIC speed.

  • 79. Jack  |  January 4, 2009 at 2:26 am

    I installed the runtime, but I have still Problems with the “MSCOMCTL.OCX”.

    “Component ‘MSCOMCTL.OCX’ or one of its dependencies not correctly registered: a file is missing or invalid”

    Does anyone have a solution?!

  • 80. Janne  |  January 4, 2009 at 4:52 pm

    I downloaded “a1ctl_v0.4_src” but there’s no .exe file in it. How I start the program?

  • 81. Jack  |  January 4, 2009 at 5:36 pm

    I found a solution…
    I downloaded another Fan Controll Program (AA1FanControl) and installed the “TVicPortIstall41.exe” which was included.

  • 82. Janne  |  January 4, 2009 at 7:08 pm

    I downloaded “a1ctl_v0.4_src” but there’s no .exe file in it. How I start the program?

    woups, I accidentally clicked wrong link 😛

  • 83. Alex Martini  |  January 6, 2009 at 7:57 pm

    The Fan function doesn’t seem to work here, Bios vrs. 3109.
    But thanks for your time and greeting from Brazil.

  • 84. kuppazki  |  January 8, 2009 at 10:54 pm

    “Note: If you have an error concerning a file “MSCOMCTL.OCX”, please install this runtime.” still wont work

  • 85. Rich Skoller  |  January 9, 2009 at 3:56 pm

    I have an Aspire One running Windows XP. I’ve downloaded the file, but how do I get it to run (I’m new to rar files)?

  • 86. Rich Skoller  |  January 9, 2009 at 4:08 pm

    Ok – I was able to open the rar file and now I have the following files:


    Which of these should I be installing?

  • 87. Mark Fletcher  |  January 9, 2009 at 8:19 pm

    Brilliant program, it’s made my AA1 lovely and quiet during lectures, so people don’t keep turning around to hear a VVVVRRRR… One of my friends just bought an AA1 too, and the first thing I did was tell him to install A1ctl.

    The Custom fans speed settings work perfectly and that’s kept the noise down, however when I try to use the Device menu to disable the LAN or webcam, it pops up with a Up with a “Runtime Error 53: File not found”

    Any solutions?

  • 88. Rich Skoller  |  January 9, 2009 at 8:27 pm

    Is there someone who can give easy instructions on how to install and then run this program? I’d greatly appreciate it.

  • 89. Rich Skoller  |  January 11, 2009 at 12:58 am

    I finally got the program to run and it’s great. Two questions though:

    1. What does “dynamic” CPU throttling mean? I’d like my netbook to run faster when on battery power (presently it runs MUCH slower when on battery). Would selecting dynamic instead of 800 MHz accomplish this?

    2. Since installing this I now get an error message with Norton Internet Security 2009. The message is “Symantec Service Framework has encountered a problem and needs to close.” Has anyone else experienced this? Any suggestions?

  • 90. Patrick  |  January 11, 2009 at 11:49 am

    Great program! im using ít on my Aspire one 150Bb with 1.5gb ram, bios 3108, Xp home Sp3. And it works well, my only problem is that “prevent HD clicks” didnt work so I downloaded http://sites.google.com/site/quiethdd/ and with that program did my clicking hard drive finally became quiet. I also want to ask about the cpu throttling, when I choose “dynamic” will the processor stay in full speed or not? Best regards Patrick

  • 91. ca6  |  January 13, 2009 at 11:24 am

    This program doe now work as intended on my machine. It does slow the fan down right at the start, then after a couple of seconds it spins the fan up to max (or what sounds like max speed) even though the program is reporting 43 degrees.
    The program is runnng at default settings and the fan should be off below 50 degrees.

    Any ideas?

  • 92. NarfZort  |  January 13, 2009 at 8:46 pm

    How do I correctly install this program?

  • 93. Anonymous  |  January 17, 2009 at 11:38 pm

    hello,but this software don’t work with bios 0.3309?

  • 94. bkmz77  |  January 18, 2009 at 10:39 pm

    worked to make the fan control at the msi wind u90. rus

  • 95. dergutename  |  January 18, 2009 at 11:51 pm

    great program! everything works with bios v3309 so far.

    fixed the MSCOMCTL.OCX-problem with dan’s link:

    what temperature-values do you guys usuallly use for the fan-control?

  • 96. Memos From the Cube » Blog Archive » Acer Aspire One  |  January 19, 2009 at 12:28 am

    […] a few days to get used to, since it’s only 95% scale. I’ve also installed the excellent A1CTL software which provides better fan management, temperature monitoring, battery monitoring and easy […]

  • 97. VaZZoR  |  January 19, 2009 at 5:42 am

    What parameter programm use to prevent HD clics ?
    It work for me only when i use “hdaparm -S0 -B255 /dev/hda”. When use builtin in programm, it not work. Would you change this please.
    Best regards.

  • 98. Morris Lee  |  January 24, 2009 at 4:05 am

    is there any future support for Windows 7? any work around?

  • 99. mnemonix  |  January 25, 2009 at 5:09 pm

    I had “MSCOMCTL.OCX” problem. And here is mine solution. I have installed “Microsoft Common Control Runtime” first but it didn’t help at all. So I get MSCOMCTL.OCX here http://www.ocxdump.com/download-ocx-files_new.php/ocxfiles/M/MSCOMCTL.OCX/6.01.9782/download.html and copy it to the a1ctl directory and c:/windows/system32 directory. Problem solved.

  • 100. quiltingbyjeanne  |  January 26, 2009 at 4:23 am

    The program is very nice; however, with it installed, now the acer does not think it is a battery and is on constant AC power. I’d still like to have the battery icon for a general feel of % remaining. Is the battery number in the icon minutes remaining or %? Is there a way to convince Windows that I still have a battery?

  • 101. seilebost  |  January 28, 2009 at 1:04 pm


    Good program but today I have a problem. The icon tray shows (flips) the temperature between 35 °C and 62 °c and aitcl runs and stops the fan. Why ?

    best regards.


  • 102. Peter  |  January 30, 2009 at 11:08 am

    For anyone else having trouble getting A1ctl to run on Windows 7 beta, here’s what I did.

    Download the version of mscomctl.ocx above, not sure if other versions would work or not but this one does.

    Register the ocx with “regsvc32 c:\windows\systems32\mscomctl.ocx” but it’s very important that the command prompt window that you run this in is opened with “Run as administrator” otherwise it fails.

    At this point I got an error that a1ctl could not access to IO ports to a right clicked on the a1ctl executable and ran that as administrator too.

    The result is a silient (most of the time) AA1.


    • 103. matt  |  December 1, 2009 at 2:43 am

      hey how do you register the ocx ? thank you

  • 104. windows 7  |  February 2, 2009 at 4:56 pm

    doesnt work on windows 7

  • 105. WorksonWin7  |  February 3, 2009 at 6:57 am

    It does work on Win7.

    • 106. ko  |  January 18, 2010 at 8:46 pm

      It runs on Windows 7. I can’t get it to actually change my fan speed in any way though.
      Using model D250.

  • 107. aspireuser_b  |  February 5, 2009 at 12:20 pm


    I have the same problem – AA1 thinks, it is on AC power. Unpatch ACPIEC for now. That is what i did…

  • 108. aspireuser_b  |  February 6, 2009 at 3:39 pm

    Solution for problem one post earlier is manually patching ACPIEC and manually setting register. Then it works OK. Google for how to.

  • 109. dubrox  |  February 12, 2009 at 12:02 am

    same problem as the user ca6

    When I start A1Ctl, or when i just click “Save” in the config window, the fan turns off (as wanted). But after 4 seconds the fan seems to go to max speed and, little by little, gets back to a normal speed.
    During the whole process the temperature is shown to be 42-43°. A1Ctl is set up to turn of the fan if temp is lower than 60°.

    My bios is v3309, Windows XP Pro sp3 (with autoupdates enabled), ACPIEC patched.

    Any solutions?

  • 110. Noda  |  February 12, 2009 at 2:31 pm

    That’s a known bug due to a hardware threshold (see “new a1ctl version” post on main page).

    It should be corrected in the next version.

  • 111. B.D.  |  February 14, 2009 at 9:38 pm

    LIke some others, I bought the AA1 for my child, so she could get online, particularly for games like at Webkinz; however, the default screen resolution interfered with her ability to play. A1CTL seems to have fixed that problem, but I, too, am having the “On AC power” error in the Tray. I did a Google search for manually patching the ACPIEC, but didn’t see anything that seemed to address this particular problem.

    Any more detailed suggestions would be very much appreciated.

  • 112. SH0DAn  |  February 15, 2009 at 2:33 pm

    Hello Noda,

    maybee you’re intereseted in getting rid of the direct I/O access to the embedded controller. Then patching acpiec.sys is no loger neccessary, because you can use this driver for talking to the embedded controller. Contact me or have a look at http://www.aspireoneuser.com/forum/viewtopic.php?f=6&t=11366. I’d be glad to help making this greate tool even better.



  • 113. neotonight  |  February 21, 2009 at 5:25 pm

    cam fix mscomctl.ocx

  • 114. Blake  |  February 22, 2009 at 1:51 am

    Hi I’m having the same problem when opening the exe file and tried your solution but the problem still exists. Any other fixes? Thanks in advance.

  • 115. dbarnes180  |  February 24, 2009 at 2:26 pm


  • 116. just-joshin-ya  |  February 27, 2009 at 12:39 pm

    THANKS I bought a AAO to control my LINE 6 guitar and processor because it will fit in my guitar case to my surprise I needed 1024 x 768, I was so sad. BUT YOU FIXED IT THANKS AGAIN

  • 117. bolero  |  February 28, 2009 at 6:30 pm

    Thank you, a very useful program. I’m evaluating it against AA1fanctl at the moment. To install on Windows 7 you have to set both, devcon.exe and a1ctl.exe, to run as admin. The patching is disabled, though. Where is that acpiecp log getting written to?

  • 118. Derek  |  March 4, 2009 at 2:08 am

    I have attempted to install this on an AA1 with a 160G HDD running Win XP SP3.

    The program will not run. I just get the message “Sorry, can’t initialize IO access”

  • 119. tynoda  |  March 4, 2009 at 2:35 pm

    Thank you very much for this app. very usefull, really appreciated!

  • 120. skyler  |  March 5, 2009 at 11:53 pm

    Hi, I just install this app, but it show will change something and it’s safe. So I enter “YES”, But now I can not star my AA1 and I had changed the BIOS form 3307 to 3309. I wonder what’s happened to my AA1, any solution? Big Thanks!!

  • 121. Morris Lee  |  March 6, 2009 at 1:05 am

    Skyler, sounds like you had a bad flash, do this


    good luck

  • 122. Ris  |  March 6, 2009 at 8:43 pm

    Ho installato a1ctl su AA ONE 110AB ssd con XP Home ma compare sempre il simbolo di alimentazione da rete anche se l’alimentazione è da batteria.
    Esiste una soluzione ?

  • 123. Pedro  |  March 7, 2009 at 3:10 am

    installed it, now how to use it? how do I access the tools? mainly downloaded to increase the resolution to play games like civ 3, etc, which still don’t work. how do I uninstall it if i wish? thank you very much. (there is no icon in the task bar, only once before i restarted)

  • 124. Noda  |  March 9, 2009 at 12:32 pm

    The application icon is in the system tray (bottom right of the screen, use the arrow to expand if needed).

  • 125. John  |  March 11, 2009 at 7:55 pm

    Hi Noda,

    Having trouble getting it to run. I get a dialog with the message:
    “Run-time error 53 File not found”.

    No file is mentioned. Being a software developer i cranked open the windows debugger and looking at the stack trace I am assuming the VB6 call, “QueryInterface” is failing.

    Assuming I’m missing some requisite… any ideas?

  • 126. Mike  |  March 11, 2009 at 8:37 pm

    Hasving the same problem as Derek above.
    Installed it on AA1 with 120GB HD and WINXP SP3.
    updated the runtime already but always there is the error message ” Error, Can’t initialize IO access”.
    What could I do? Ehrn I read all the message3s here how good this tool works, it’s a pity I can’t let it run.
    Please, please give me some advise

  • 127. bonhomme  |  March 12, 2009 at 4:43 am

    I’m trying to change the icons colors but with the .ini file but I don’t know what are the codes. I googled it and I doesn’t seem to be HTML color coding, it seems to be Visual Basic color coding. The problem is when I use visual basic color coding I get other colors instead of what I want… Does anyone know what is the color coding I need to use?

    Btw this software is great, I was looking for something like “speedfan” but made for aspire one. Thank you very much for making this software.

  • 128. Noda  |  March 12, 2009 at 9:15 am

    @Mike> This is probably because you have another program running locking IO access, like GMABooster. I’ll try to resolve this problem in the next version.

    @Bonhomme> The colors are HTML color coding, with a &h (if I remember well) prefix before. It’s standard RRGGBB then.

    @John> You need to install the VB6 Runtime (search on MS website) to run this program.

  • 129. Olaf  |  March 14, 2009 at 11:33 am

    This nice tool does not work correctly, now my A1 thinks it is on AC power… a BIOS problem? BIOS is 3309.

  • 130. Sunny  |  March 14, 2009 at 9:48 pm

    since bios 3309 the values are changed which control the fan. I am currently working on an updated version for the latest bios and some other features (added resolution 1280×1024 to choose and you can add a custom device which you can turn of via the menue, for example a bluetooth module or what ever you want…)
    This will work with the newest bios version from packard bell and gateway (clones from the aao…)
    I think it will be ready in the next days.

  • 131. Olaf  |  March 15, 2009 at 9:06 am

    Thank you Sunny! But I downgraded the BIOS to 3305, even now A1Ctl simpy does nothing. E.g. when I say “stop fan”, the fan is still running at the usual speed.

    BTW, what is the custom speed used for?

  • 132. Marco  |  March 18, 2009 at 6:29 am

    I read that it will be usefull (to preserve battery’s life) to not charge it completely every time. Somebody suggest to limit the charge to about 80%.
    For this reason could be usefull to add to a next release of the program a charging control that beeps you when the aa1 charging level reachs the valuel that the user has decided before.
    Sorry for my bad english

    Marco – Italy

  • 133. Sunny  |  March 18, 2009 at 9:00 am

    Custom speed means, you can say actl at which temperature the fan should start and when it should stop. This can be set in the “configure actl”. BTW the slow mode doesn’t exist, so it could be removed (i am not sure if it exists in older bios versions, but in the bios versions >=3301 it s not available).
    About the battery charging, i could implement it, but i don’t think that it saves battery life. For example, i have got a Dell D610 (company laptop) and it is about 3,5 yeras old and the battery goes about 1,5-2 hours (3,5 when new). And it is used most time on AC. So i don’t think that charging only up to 80% increases battery life. But if you like, i can add it. I will have a look on it.

  • 134. Noda  |  March 18, 2009 at 12:06 pm

    marco> This is a bad and wrong idea.

    Sunny> slow mode exists and is available on bios version > 3301, but there is some hardware version that need another “magic” value to activate it. Also, slow can’t be activated until the CPU has gone over the 37°C threshold.

  • 135. Sunny  |  March 18, 2009 at 12:16 pm

    Noda> The whole thing is very confusing, I am not sure why on some AAO with 3309 Bios all is working perfect and on others the AAO shuts down after some time. Is it the difference between 110 and 150? Any idea? I found different values for the 3309 Bios for activating/stoping fan…

  • 136. alicez  |  March 19, 2009 at 1:37 am

    I just received an Acer Aspire One 10.1″ 1GB ram; 160GB harddrive and wonder if this program will work on this unit. Would anyone know? I looked in System info and saw = BIOS Version/Date – Acer V 1.00 1/13/2009. Is that the BIOS version?
    Will the program work on this unit?

  • 137. Olaf  |  March 19, 2009 at 8:29 am

    AFAIK the 10.1″ version is somewhat different from the older Aspire Ones.

    And now I know why my A100X always thought it was on AC power. It was the ACPIEC patch, I removed the patch, then everything was OK again.

  • 138. Sunny  |  March 22, 2009 at 6:46 pm

    I think the problem is, that actl gets the bios version by reading the registry. And the value in the registry is written to registry during installing xp. If you upgrade/downgrade the bios, the new value isn’t written/updated to the registry.
    If you know how to use regedit, the start it and go to: HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System \SystemBiosVersion
    and look which value is there. I think in your case 3309 will be there and not 3305….

  • 139. Sunny  |  March 22, 2009 at 8:33 pm

    I had a look on it and I downgraded my bios to 3305. But the version is updated in the registry after first start. So that is not the problem.
    But i had maybe found a bug in your bios recognation part:
    You use this here “If ((Right(res, 6) = “3114”)” to identify the version, you compare the last 6 (!) signs from the right from the bios string with 4 signs… that will never happen. I think it should look like this “If ((Right(res, 4) = “3114”)”. If I am right your tool will work on all versions exept 3109, 3114 and the newest 3309… It will always use the settings for the bis 3304 which works on 3301-3308.

  • 140. Josh  |  March 24, 2009 at 1:33 am

    Hi Noda,

    I found your program very useful, however, I noticed few changes with my A1 that’s bugging me. Do you have any instruction on how to reverse the process, or simply remove the program from my system. I tried not to start it, but it continues to control the processing speed and also the fan. I want to remove it so I could start from scratch.

    Thanks a lot.

  • 141. Rogi  |  March 24, 2009 at 6:14 pm

    Thanks for this awesome utility.

    I see you’re working on a custom device control option (and am assuming it’ll require you to configure it by entering the device ID). Any chance you might add more than one custom device control?
    Or possibly update modDeviceControl.bas to enumerate through all connected USB devices?

  • 142. RejZoR  |  March 25, 2009 at 3:10 pm

    For all those having problems with MSCOMCTL.OCX errors…
    Download the runtime and then unpack the runtime package with WinRAR or 7-zip. Place MSCOMCTL.OCX in the root folder of A1CTL (next to the a1ctl.exe). That will solve the problem.
    I don’t think there will be any need to install the runtime, though it can’t hurt either.

    I’m writting this because i was still getting MSCOMCTL.OCX errors even though i’ve installed the runtime.

  • 143. Radu Adrian REPCIUC  |  March 29, 2009 at 9:18 pm

    Hi Noda,

    Do you have any instruction on how uninstall this program, or simply remove the program from my system. I tried not to start it, but it continues to control the processing speed and also the fan. I want to remove it so I could start from scratch.

    Best regards

  • 144. Noda  |  March 30, 2009 at 8:09 am

    Launch the config box, uncheck “autostart with windows”, unpatch acpiec.sys if needed, then remove the a1ctl folder. That’s all.

  • 145. Skip Weber  |  April 2, 2009 at 1:28 am

    Pardon my ignorance but could you possibly tell me where to unnrar this file to? I made the mistake of double clicking on it while the file was on my desktop and it splattered files all over the desktop, none of which Windows is able to open. Is there an exe that collectively launches the different applications? Thanks much for any help as some of these tweaks should be useful on my Acer Aspire One. Once installed, how do the various programs initiate?

  • 146. Morris Lee  |  April 2, 2009 at 5:58 am

    @Skip Weber,

    you can extract to anywhere, probably somewhere in program files is a better idea, just look for the exe file to run.

  • 147. Duane Haas  |  April 2, 2009 at 11:27 am

    Seems like since installing the utility i cant get the regular windows battery meter to work. keep saying unavailable? any way i can uninstall the utility? after launching it the first time, it did say i had to patch something, and clicked ok, but now i cant see the battery status through windows???

  • 148. Noda  |  April 2, 2009 at 12:56 pm

    You can unpatch the dll in the options to fix this problem.

  • 149. kDn  |  April 2, 2009 at 9:49 pm

    Maybe this will be interesting for you:

    Original post:

  • 150. gerd  |  April 3, 2009 at 10:30 am

    i wonder if this tool will support other acer notebooks like the aspire (6935 in my case) as well…

  • 151. Jorgen  |  April 8, 2009 at 6:14 pm

    Great tool! Very, very useful. Screen size of 1024×768 is nice addition!!

    Does the fan stuff work properly for the new A1 D150?
    What are the default settings for fan control and CPU speed when the tool is not loaded?

  • 152. Jorgen  |  April 8, 2009 at 6:23 pm

    On A1 D150:
    The screen stuff seems to work
    The temperature shows 17° all the times. Fan settings do not seem to have any effect on the fan.
    Devices can be switched off
    Don’t know about the CPU downscaling
    Battery indication equal to WinXP battery indication

  • 153. ben  |  April 9, 2009 at 5:34 pm

    Hi Noda!

    Great Tool. I was just beginning to be bugged because the fan is always running.

    One problem though. After setting up the a1ctl.exe the fan went out and everything seemed normal. Problem is that my battery icon went missing. I can´t get the one from you running. If I go to the normal win xp energy options the computer says that I don´t have a battery connected. Even if I pull out the plug. That´s really weird & I don´t know what to do. You got an idea?


  • 154. ben  |  April 10, 2009 at 8:40 pm


    I found out now. Somehow the MS ACPI Driver in my device manager got scrambled. So I told my System to reinstall the driver. Now everything works again!!!

    *happy* 🙂

  • 155. Isis  |  April 12, 2009 at 3:41 pm

    I have the Acer Aspire One 10.1 (SSD) I purchased it about a week ago. Do I need to install this software because I am having the loud fan issues and my HD has been making a clicking sound which I know isn’t right. Also I don’t know how to unpack the rar. or source to get them installed. Perhaps I should just return the unit for a full refund? I am not extremely computer saavy. Please let me know what you think. Happy Easter. 🙂

  • 156. AppzFans  |  April 15, 2009 at 12:15 am

    Please kindly update this great utility to support A1 D150…….

  • 157. Isis  |  April 15, 2009 at 8:09 am

    I returned my unit to the store of purchase. I’m going with ASUS or Samsung. If it can’t be quality I’m not spending my money with any company. Perhaps if we all sent our units back instead of accepting substandard goods from companies we would get better products. Thanks for everyone’s help in the matter.

  • 158. Noda  |  April 15, 2009 at 9:32 am

    Isis> fan will be loud on every budget netbook, Asus or Samsung included (I own an Asus too). That’s why some tools exists to reduce this noise 😉

    Concerning the HD click, this is a “normal” behavior of notebook HD, parking the heads to prevent data loss in case of a shock. But it concerns HD as Hard Drives, not SSD as you say you have… SSD have no mechanical parts so it can’t click.

  • 159. Art  |  April 17, 2009 at 5:50 pm

    I have the same problem as Jorgen, also on the 10 inch model (AOD150). I unpatched and uninstalled a1ctrl, but now my battery indicator drops to zero percent throwing me into hibernation. This happens over and over again when I’m running off of the battery. If anyone can help, I’d appreciate it. Right now, I’m at my wits end to get it working.


  • 160. John  |  April 18, 2009 at 6:18 am

    We have created a parmanent mirror for your software.

    URL : http://www.eeefiles.com/index.php?act=view&id=688

    You can use this link direclty.

  • 161. Mike Angelo  |  April 29, 2009 at 2:18 pm

    Curious about the option to throttle the CPU. My Acer AspideOne is a 1.6 Mhz processor, but your menu offers 800Mhz and Automatic. I’d like an option to leave the processor alone.

    Thank you for this program. I was heartbroken when my acer 10″ seemed to be locked into such a strange resolution as 1024X600 that made it impossible to use the Acer for most applications I need; i.e., Quickbooks9, Photoshop8, Adobe RaW, and Remote Desktop to a system using 1024X768 Resolution. Acer owes you Cash because without A1Crtl I would have returned my notebook.

  • 162. TAriq  |  April 30, 2009 at 1:22 am

    how do i uninstall the software and let the fan run on normal speed thanks

  • 163. TAriq  |  April 30, 2009 at 1:24 am

    how can i remove the software and let the fan run on normal speed

  • 164. Noda  |  April 30, 2009 at 7:24 pm

    mike> auto is the normal processor behavior as it throttles itself when idling by default.

    Tariq> just delete the app folder…

  • 165. jay  |  April 30, 2009 at 8:20 pm

    I am def not someone who knows anything about computers bu this has made my life so much easier! I have the battery prb tho. The indiacator is gone and it thinks its running off ac all the time. How do I fix this – seen this q in here but don’t understand the answers! Thanks

  • 166. alex  |  May 2, 2009 at 4:33 pm

    super tool! works perfect.
    thank you!

  • 167. Migsantiago  |  May 3, 2009 at 5:17 pm


    It seems that the program (version 0.4) does not work on my aspire one. My model is AOA110-1633 with bios 3308 and windows xp sp2 installed on a SSD 8GB.

    After running the program and selecting different options the fan speed is not affected by any of them. The FAN OFF option does not turn it off and there is no speed change after modifying the slow or auto modes. I have clicked the patch acpiec button but there was no change.

    I need the fan to be faster because my laptop is so hot, but no option makes it change its speed.

    I’ve read some comments that say they can see the current temperature, but I don’t find that temperature; if I hover the mouse over the tray icon it doesn’t show anything.

    Thanks for any advice.

  • 168. Migsantiago  |  May 3, 2009 at 8:22 pm

    The program started working after UNPATCHING the acpi file. Now it does control the fan and it shows the current temperature and battery status.

    The program says it is better to patch the acpi file but actually it is not.

    I have an ssd, how will it be affected?

  • 169. Trying2getscreenrestowork  |  May 4, 2009 at 6:11 pm

    I was hoping someone might be able to help me — I downloaded the file and when I click on the .exe it says it is already running, but I cannot adjust the screen resolution… How, exactly, do I do that? Perhaps I installed it incorrectly?

  • 170. budgetFan  |  May 5, 2009 at 4:40 pm

    Excellent program NODA!

    The fan control portion unfortunately, does not work with Bios 3310

    Waiting for a much needed update! 🙂

    Thanks Again, will revert to 3305 in the mean time…

    a1ctl ROCKS!

    ps: also had a problem with battery indicator after uninstall, did what @145.ben suggested and it worked!

  • 171. trowa  |  May 12, 2009 at 8:34 am

    one cuestion, I have an packard bell dot which is the copy of the original acer aspire one, sooo my cuestion is, that program works on mi netbot, I already probe but after about 30 min the screen torne black, and i have too reboot the systen.
    (my ingliish is a shit)

  • 172. jawo  |  May 14, 2009 at 8:48 pm

    Great Program! But now it gives me problems. When I start the a1ctl.exe file it starts an instalation. When I reeboot the machine the instalation start over and after a while the progran runs. Every time i boot the instalation starts and it takes about 2-3 min. My bios is 3305 i flashed it down to use the program.
    I unpacked all the files to a folder in my programs folder, and runs the exe file from there.
    Please help.

  • 173. Claude  |  May 16, 2009 at 12:16 am

    This is great – Thank you.

    I’d also like to aww overclocking like the super hybrid engine does on the EEE PC as I’d love to push my CPU a bit when I need (or want) a bit more speed (i.e. push it to 1.75 GHz and even 2.00 GHz).

  • 174. Sunny  |  May 16, 2009 at 8:59 am

    Hello guys,
    luckily noda released the sourcecode of his project 🙂 Many thanks.
    So I could change some things, fix some little bugs and add support for new bios versions (now support till 3310 and for the one’s from Packard Bell and Gateway).
    Main changes in my version:
    – added support for new bios versions
    – added for screenmode 1280×1024
    – added XP-Style look for the programm
    – added possibility for adding one custom device which can be disabled via a1ctl menu, for example bluetooth device or something like that.

    For adding your custom device you need the “device id” which you can find via “system”–>”device manager” in your windows. Open the device you want to add for controlling via a1ctl and go to the tab “details”. There you see the device id, for example “USB\VID_1BCF&PID_0535\5&1536627B&0&1”
    You have to add “USB\VID_1BCF” into the field “Device Instance Id” in the configure window. And give it a name which you want to see in your a1ctl menu, for example “Bluetooth”.

    And one comment for all with a bios version > 3308. It can happen, that on some A110 or A150 the fan control won’t work. I don’t know why, maybe it is due to changed hardware during production.
    Here is the link to the new a1ctl:

  • 175. HappyHappy  |  May 18, 2009 at 1:31 am

    ^Thanks Sunny!!! It works !! Excellent!!

    Tested it with WINDOWS 7 RC1 – A110

    BIOS 3305 – Fan Control works in custom mode
    – Video resolution switch is missing (probably win7 issues)

    BIOS 3103 Gateway(=3309) – Fan Control works!
    – Video resolution switch is missing

    The Web Cam (acer crystal eye) is disabled when unticked, but does not turn on when ticked. You have to manually enable it in device manager.

    ACPI patching/unpatching is also greyed in configure menu. (win 7 driver issues?) Still a few errors cropping up in logs.

    The portion of most concern is the fan as its cheap and noisy…now after a1ctl its just cheap… haha

    Thanks again Noda! And Sunny for tweaking and updating it for the masses!! Much Appreciated.


  • 176. ArchAngel  |  May 18, 2009 at 2:47 pm

    Hi Sunny!

    I downloaded your modified version and tried to install it in my A110 (8Gb SSD, 1Gb RAM, TinyXP (by Ron[nl]), Gateway BiOS 3103). However, I keep getting the following error messages everytime I try to install it:

    “Error, can’t load settings: Type mismatch”

    After I acknowledge this error dialogue, the program proceeds to ask me whether I want to patch ACPIEC.SYS. This next error message then immediately follows:

    “Runtime error ’53’:”
    “File not found: WinIo.dll”

    After I acknowledge the above error dialogue, the installation then terminates prematurely.

    FYI, I’ve been able to install Noda’s version without the above errors, although I haven’t gotten it to work with the more recent BiOS versions. Hope you can help.

    Thanks in advance! 🙂

  • 177. Sunny  |  May 18, 2009 at 5:18 pm

    on Vista and WIN 7 the possibility for tweaking some things like screenresolution and so is limited, because of security restrictions through windows…

    For the problem with the runtime error “Error, can’t load settings: Type mismatch” I think it happens, because I added some infos to the “a1ctl.ini” I think you should first delete the old one and then make your settings again after starting the my new version.
    The “Runtime error ‘53′:” “File not found: WinIo.dll” only happens if this dll isn’t in the same folder like the a1ctl.exe…

  • 178. ArchAngel  |  May 20, 2009 at 1:00 am

    Hi again, Sunny!

    I finally figured out what I did wrong. I initially thought that the file you provided was a full installer package (which I tried to “install” from scratch), and only belatedly realized that it was just the executable meant to replace the original A1CTL executable.

    It seems to be working now, and I’m currently keeping it under observation for any unpredictable behavior or unexpected crashes.

    Anyway, thanks again for your modded version, and of course to Noda for the original program. 😉

  • 179. PiraticaL  |  May 20, 2009 at 1:02 pm

    Hi Noda and Sunny

    Sunny your update works for turning the fan off and putting it in Auto mode. Thanks a Lot!

    It unfortunately does not work with the slow setting. What happens is that it speeds up to max and then slowly goes down to off state (takes about a 1min).

    Think maybe the code for slow is incorrect in the update.

    Using Bios 3103 Gateway… Win7 rc1.

    Still great work!

    Thank you both! 🙂

  • 180. Sunny  |  May 20, 2009 at 4:59 pm

    As far as I know, Acer removed the slow mode in bios >3308. And I think you don’t need the slow mode really… Use the automatic instead and it is nearly as silence as in slow mode. In custom mode I only use “fan off” and “automatic”. Thats all you really need. But If somebody has some more infos to the slow mode please let me know. Then I can maybe provide a new update.

  • 181. notwinsavvy  |  May 22, 2009 at 3:11 pm

    i know almost nothing about windows but i
    have to set up xp pro on this nice little 8.9″
    160 gb machine for a windows user who
    wants a1ctl for fan and screen functions
    and also wants to have admin and ordinary
    users access it. how do that? the config
    dialog says run at win startup but it seems
    to mean login. can it run as a “service”
    but have the icon show in each user’s tray?
    if not, how can i set this request up for
    her? thanks for any ideas

  • 182. Rogi  |  May 23, 2009 at 3:30 am

    I’d just move the a1ctl shortcut from:
    C:\Documents and Settings\[Her account]\Start Menu\Programs\Startup
    C:\Documents and Settings\All Users\Start Menu\Programs\Startup

    • 183. notwinsavvy  |  May 24, 2009 at 12:50 pm

      hi Rogi –

      thanks for the suggestion. tried that before
      posting, but logoff -> switch user -> login =
      “a1ctl – Error, can’t initialize IO access” which
      makes me think a1ctl locks something, hence
      the question about a daemon. of course they
      could always logoff between users but then
      they can’t just do a quick pass-the-computer
      for a moment and get it back with their session
      intact, which is what is wanted…

    • 184. notwinsavvy  |  May 24, 2009 at 1:21 pm

      p.s. what i have noticed is that once it is
      running then as long as the user who has
      it in her startup menu to invoke it stays
      logged in, it continues to work ok for
      whichever other users she might switch
      to, so something that checked if an instance
      was already running and aborted trying to
      reload it would be a possible fix that could
      be implemented externally in a login script,
      except that then the icon wouldn’t show
      in the switched-to user’s tray, so she
      would not be able to change the settings
      for resolution, etc, which why they want
      it in the first place. unfortunately, in this
      instance, any given one of the four using it
      will not always be around to login for them
      all. i’d look at the code if i didn’t mind buying
      a compiler just for this, or put in the effort to
      do a port to something i can compile, but
      both of those options are pushing the
      devoted partner of one user role that got
      me involved in the first place a bit further
      than I’d like…

  • 185. Lukas Farber  |  May 24, 2009 at 12:07 am

    Excellent work Noda and Sunny. I own a D150 with 2GB of RAM and have also noticed that the slow mode doesn’t work (haven’t had the temp up high enough to activate auto mode I think) and the temp reads 17 (not sure if it just runs cool or if it is a static indication). Please do not take my observations as complaints I love the possibilities that this program opens up. I would like to see downscaling for resolutions up to 1920×1080 and an explanation of what the dynamic CPU mode does. I am trying to overclock my N270 at or about 2GHz. If anyone who has any experience with this kind of thing I would appreciate some links/tips/procedures (this site was hard enough to find). Anyway, I appreciate your work and dedication Noda and Sunny. I expect great things out of you two in the future.

  • 186. joey  |  May 24, 2009 at 1:48 am

    This is a great program i love it thank you it was exactly what i was looking for

  • 187. Sunny  |  May 24, 2009 at 9:19 am

    The fan control of A1CTL doesn’t work on a D150 or another acer netbook, only on A110 or A150… The downscale and the other things should work on other acer netbooks.
    BTW it is NOT possible to overclock the acer netbooks. Acer uses a special device for clocking the bus and cpu which can’t be changed via software…. very sad, but there is no chance…

  • 188. anton  |  May 25, 2009 at 9:04 pm

    i’ve got the same thing “Error Cannot initialize IO Access”. could anybody, please, explain in detail how to fix it?

    • 189. Jerry  |  November 29, 2009 at 6:11 pm

      i’ve got the same thing “Error Cannot initialize IO Access”. could anybody, please, explain in detail how to fix it? On Windows 7

  • 190. GyTe  |  May 26, 2009 at 9:16 am

    Thanks 🙂 This’s the program that I was looking for..

  • 191. Splinter  |  May 26, 2009 at 5:08 pm

    Hi! Noda you just made a perfect tool for my AA1. Thanks!
    But since today I have a problem with it: The temperature flips between 35 and the real temperature (I guess), and this turns the fan on and off.

    Anyone familiair with this phenomenon and knows how to solve it?


  • 192. PavelD  |  May 27, 2009 at 11:43 am

    Hello, Noda and Sunny!
    I writing my own program for A110 (A150) fan control (Smart Fan) and get some interesting experience which can help improve a1ctl. I can share my experience with you. If you interested email me paveldudn@gmail.com
    P.S. Sorry for my bad English 😦

  • 193. ALee  |  May 28, 2009 at 4:30 am

    quick note – it does work under Windows 7, the proper command to get the runtime working is

    regsvr32 c:\windows\system32\mscomctl.ocx

    regsvc32 isn’t a command, and systems32 isn’t a folder. you may need to download the runtime separately. i ended up having to dl mine from majorgeeks since the ms exe didn’t install properly

  • 194. lenin  |  May 29, 2009 at 10:21 am

    Thank you for this great utility. I am using bios 3308 and i had problems with shutdowns. After I have unpatched ACPI everything seems to be OK. Maybe there is some bug in the patch.. It now seems to work but I don’t want my system to log every temperature warning.. 😦

  • 195. lenin  |  May 29, 2009 at 6:35 pm

    I have to correct my recent post.. Unfortunately it is still spontaneously shutting dow 😦 I tried 3309.. It’s strange that it works on some machines and on others not..

    • 196. PavelD  |  June 1, 2009 at 4:11 am

      Try to change values in a1ctl.ini, this way:
      It may help.

      • 197. steff  |  August 28, 2009 at 1:31 pm

        hi, I have an AA1 110 bios 3309 and have spontaneous shut down as well.
        i tried these values for the ini file, but got no change: after about 15 secs the aa1 shuts down, no bsod, no message given.

  • 198. yf  |  June 1, 2009 at 8:03 am

    does this work with the new 751?

  • 199. Sunny  |  June 1, 2009 at 2:04 pm

    Try it, but I think it won’t work. (Fancontrol will not work, the other features should work….)

  • […] programmaatje is er en kun je hier ophalen bij Noda’s Dev Blog. Mocht je geen RAR bestanden kunnen verwerken, kun je hier een […]

  • 201. Jairo  |  June 1, 2009 at 10:40 pm

    a1ctl is not working for my aoa110. When i put the fan in custom mode the fan stop five seconds and after works faster. If i put the fan off i have the same result. Can you help me?

    • 202. Sunny  |  June 2, 2009 at 5:53 am

      Try using my new version… link is some post above

      • 203. Jairo  |  June 3, 2009 at 8:04 am

        i am using the 0.4 version of your program. this is the last?

    • 204. GZ  |  October 15, 2009 at 5:32 am

      AOA110 needs a hardware mod, b/c it’s hardware locked

  • 205. Joe  |  June 1, 2009 at 10:48 pm

    Everything works except when I am playing voyage century the game suddenly is stopped by stupid windows taskbar! Good software

  • 206. columbusite  |  June 2, 2009 at 3:05 am

    Also get an error that says is can’t initialize IO, any way around that?

    • 207. columbusite  |  June 8, 2009 at 5:56 pm

      Fixed it! I opened the program while windows was starting. From then on you just choose to have the program startup with windows and voila.

  • 208. Thilo  |  June 4, 2009 at 7:56 am

    a1ctl with Windows 7 for german users.

  • 209. Thilo  |  June 4, 2009 at 7:57 am

    a1ctl with Windows 7 for german users.


  • 210. Brenda  |  June 6, 2009 at 12:44 am

    I downloaded what I think is your program…the first thing on this thread, but it came down as a file called a1ctl_v0.4.rar and my computer doesn’t know what program to open it with. Is this the right file? What do I do with it to enable me to change the screen resolution (my main reason to use this program)

  • 212. Pcfreak  |  June 9, 2009 at 8:52 pm

    Whaha, wrecked up my AA1 within 30 seconds.
    AA1 didn’t stay on longer than 15 seconds.
    Cause: selected Prevent HD clicks in Configure.
    Solution: Unplug power cord, take out battery, plug everything back in.

    Tips for improvement:
    – Visable on taskbar when opened.
    – Check compatibility till latest BIOS (3309)
    – Add to devices things like SD-slots, soundcard, USB-ports

    I like the app, thumbs up, 7 out of 10

    • 213. Sunny  |  June 11, 2009 at 12:47 pm

      Why you want it visible on taskbar? You have got an icon on the right…
      My version of actl1 is compatible with the latest bios v.3310 and you have the possibility to add one custom device…

  • 214. henry  |  June 10, 2009 at 3:24 am

    after the screen resolution 1024×768 has been installed, how do you fit it inthe screen without scrolling it. I hope there should be a program to just extend ot fit to the screen thanks . btw, this is a nice program.

  • 215. mike  |  June 12, 2009 at 12:26 am

    Hi !
    I’d like to report that the modified version now works for my aao110, but if I patch the acpiec driver I get an entry in error log about not been able to start. Also the system thinks it’s on AC all the time and I have no temprature display on a1ctl, so this patch is definitely not working for me and also breaks a1ctl.
    Is there a workaround?

  • 216. henry  |  June 19, 2009 at 3:39 am

    hi sunny:
    Is the modified version of act1 can fix the resolution to accomodate 1204×768 dpi or more for acer aspire AOD250-1580 . what is the bios version on this machine, is it 3110 or higher? thank you .

    • 217. Sunny  |  June 19, 2009 at 11:58 am

      normaly the a1ctl is only for the 110 and 150. But some things work on other acer’s, too. I can change the resolution to whatever you want to have. But I have only a 110 so I can’t test higher resolutions.
      I think the D250 have got other numbers of their bios version. You can check check it if you go to bios during startup or you can find it somewhere in the windows system information.

  • 218. stuartloh  |  June 19, 2009 at 4:36 pm

    i have use for some days,and found it very useful for my new Acer One’s(D 250) six cells batteries can stand up to 7 hours and 15 minutes till to the last 5% of the battery time remain,previously can only stand up to 5 hours at the most. what a god job!

    i did have some problem after installed the software,it wouldn’t let me enter the Windows which lead to a black screen,but was overcome by entering the safemode and select return to the last good condition bla bla something!

  • 219. jackmove  |  July 7, 2009 at 3:33 am

    Props on the update… finally got things rolling proper!

  • 220. Eliass  |  July 11, 2009 at 12:13 pm

    Can someone tell me why does the cpu automatically switch to 800mhz mode when browsing internet? CPU-Z shows that when playing a 720p movie it runs at 1,6ghz but when i stop it and browse internet it turns to 800mhz.

  • 221. bill  |  July 15, 2009 at 4:39 am

    O.o i put this on my computer and the fan just stopped and got over 100 degrees!! (i used the core temp app) and yes im on a acer aspire one nettop intel atom n270

  • 222. Juan  |  July 17, 2009 at 6:24 am

    The program is very good, everything is perfect less one thing for me.
    I need to use the CPU at maximum all the time, not at 800MHz, I need at 1600MHz all the time, not dynamic.

    It’s because I’m going to use my Aspire one to control a CNC machine and if the CPU is dynamic, I will have problems and I need the maximum CPU speed.

    Can I change it?



  • 223. Anonymous  |  July 24, 2009 at 8:59 pm

    if the bios version is 3310, then modify the acerfand file as:

    add on line 86

    and modify line 122 to

    “${BIOS_VERSION_3309}” | “${BIOS_VERSION_3310}”)

  • 224. acerfanfan  |  July 27, 2009 at 7:53 pm

    I’m seeing different views on whether A1CTL can control the fan on the D150/D250.

    Some say it works, others say it don’t.

    Which is right?

  • 225. acerfanfan  |  August 1, 2009 at 9:22 am

    In relation to #212..

    Could it be that A1CTL fan control only works with the D150/D250 models, that come with Atom 270 CPU and without Bluetooth like the A150?

  • 226. Paolo  |  August 11, 2009 at 3:49 pm

    Windows 2000 doesn’t have powercfg.exe so the program won’t load on this OS: says “File not found” and aborts. Any solution?
    Thank you

  • 227. DraCoola  |  August 13, 2009 at 9:28 pm

    Deeply big thanks for your useful program.
    It help me much especially with Acer Aspire One D250 screen resolutions.
    I thought you did helps many netbook people around the world with this software.
    May God bless you and your family and your whole life!!

  • 228. Dan  |  August 14, 2009 at 2:51 pm

    Run time error #13:
    type mismatch
    when clicking on a1ctl.exe (v1.0), any idea what I’m missing/doing wrong?

    • 229. Sunny  |  August 16, 2009 at 8:11 am

      I think you have used the 0.4 Version and then you have updated to 1.0. But if you update you have to delete the a1ctl.ini. There are some changes in the new version.

  • 230. edison  |  August 15, 2009 at 5:33 pm

    what i want to say is… after i restart my lap top and found that my lap top cannot on!!!! because of this software….. so please think carefully before you install it….. i personally prefer AA1

  • 231. pmp  |  August 17, 2009 at 4:38 pm

    This looks like an awesome utility. Many thanks for your efforts! I have a D250 and am not sure if it will work with it. Its a KAV60 flashed from the 1.03 to 1.07 bios. Will the program work with same and is there anything special I need to do. Thanks in advance to all who can advise guide me.

    • 232. pmp  |  August 20, 2009 at 7:44 pm

      Ok I took the plunge, tracked down the latest (I think 🙂 mscomctl.ocx, tucked in in the same directory as the program and let it rip. Awesome. My thanks to the creator, those who assisted, and the users whose previous posts were quite helpful for installation. I understand the program is no longer under active development, but I do have a quick question. I think it was written in Visual Basic 2005. If this is correct, would a port to VB 2008 provide any benefits (smaller, faster, etc)? I don’t have much experience with VB, so I can do little more than guess. Anyone with more experience care to weigh in (or perhaps do the port :-). Again, thanks to all that made this awesome utility possible.

      • 233. Sunny  |  August 21, 2009 at 8:43 pm

        Oh, it is only about one month ago when the last version (1.0) was released. But i think this will be the last version, because it was written for the AA1 and not for the new netbooks. Some things will work on the newer versions, but not everything.
        And it is written in VB 6.0 which is much better then 2005 or 2008 because you only need some small files for running the program, not the full net-framework…

  • 234. ANiS  |  August 18, 2009 at 12:44 am

    can’t download…can be fixed or mirrored ?

  • 235. n19878  |  August 25, 2009 at 10:00 am

    installed the tool on a HP 2140 and it is more or less working. Screen oversizing to 1025×768 is working but resize to its original not (1024×576) it does not offer the option an the only way to get back the original resolution is the adaptersetting in windows.
    Hopefully there will be some update to work with the hp 2140

  • 236. jen  |  August 26, 2009 at 5:44 am

    where do i place these files? thanks.

  • 237. Loretta  |  August 27, 2009 at 11:05 pm

    Many thanks for your fine tool & work. It save me a lot of … by the fan ;-). Best wishes from me for your next time!

  • 238. Martin  |  August 31, 2009 at 8:03 am

    Your program is what I need. In my case I want to extend my resolution to 1024×768 by messenger and other programs. I’m using windows 7 rc in Spanish and I can not change the resolution with your program. I wish I could use a beta of your program for windows 7. He has now posted the latest BIOS 3310

    Thanks to all for your software development and luck. Good bye

  • 239. MySchizoBuddy  |  September 2, 2009 at 7:08 pm

    When will the screen resolution start working for windows 7. Any timeframe

    • 240. Sunny  |  September 3, 2009 at 9:37 pm

      I don’t think it will ever work. Windows Viatsa and 7 have got special restrictions…

  • 241. Alfred  |  September 7, 2009 at 5:38 pm

    I have the same runtime error 13, type mismatch
    i’ve installed both of the runtime updates listed above but it still appears.
    I haven’t used the old 0.4 version, and i’m stuck now. My AAO is running on winXP
    any help?

  • 242. Justin  |  September 16, 2009 at 6:52 pm

    I don’t see any exe files in the rar?

  • 243. Vadim  |  September 18, 2009 at 11:41 am

    Hi. Cant use fan control with 3310 bios, it’s just shutdown my aa1 when fan stop working in slow mode. Can you add 3310 bios support to this grate software?

  • 244. noda  |  September 18, 2009 at 9:16 pm

    vadim> Your only solution is to find by yourself the correct values for your hardware in the options.

    alfred> This error is due to the BIOS entry, as a1ctl was originally made for the A110/A15O AAO serie. I presume you have a later model, right? I’ll see if I find some time to fix this issue, but it will be difficult for me as I have sold my AAO.

  • 245. Nathan  |  September 29, 2009 at 4:47 am

    I have a ? first i just have to say i really like this program thank you. I had a eeepc 1000 and have used eeeclt before and i loved how you could set a profile for preformance and one for max batt and so on. can this be done with this program? I have a A0751H1-1545 and like it alot but it would be cool to get some more speed out of it.

  • 246. vincent  |  September 30, 2009 at 3:13 am

    Im a little concerned. I have the acer aspire one from att the 10.1 inch. will this program work properly with this new acer?

  • 247. Anonymous  |  September 30, 2009 at 12:00 pm

    че за хуйня???

    • 248. Anonymous  |  January 11, 2013 at 7:43 am


    • 249. Anonymous  |  January 10, 2021 at 1:42 pm

      не ожидал встретить здесь русских)

  • 250. Jeff  |  October 2, 2009 at 2:17 am

    Heya, I just wanted to share for anyone who had a problem with their mouse being glitchy on 1024×768 downscale mode. All you have to do is go into your mouse properties and disable pointer trails from the pointer options tab in my computer. Hope this helped anyone

  • 251. Aspire 5720 a chodzenie - Forum laptopy.info.pl  |  October 2, 2009 at 9:53 am

    […] […]

  • 252. Turing Machine  |  October 3, 2009 at 11:17 pm

    cheers mate i changed over to the gateway bios in-order to achieve the 9 brightness mode again. That all went well and now i am not blinded by screen anymore :-).

    But i lost the ability to control the fan AA1 control. but i am happy to tell you that you fan control utility works. than you very much.

    so now i \m no longer blinded by the screen and also enjoy a relatively quite laptop.


  • 253. Phantom Zero  |  October 4, 2009 at 8:36 pm

    i downloaded the newest one with the sources and extracted it but i atually have no i deea how to get this running can you please leave me some instructions on how to use it thank you

  • 254. Larry  |  October 10, 2009 at 2:04 am

    How do I uninstall a1ctl?

  • 255. Nick Cook  |  October 10, 2009 at 9:08 pm

    Could anyone tell me if this or a similar program is compatible with the Samsung NC10 in order to incresae screen resolution via scrolling.
    Many Thanks

  • 256. a1 fan (i don't mean the cooler)  |  October 11, 2009 at 3:03 pm

    Love the program, quite a step up from aa1fancontrol

    but what brought me here is the search for a tool that can tone down the brightness of aspire one’s monitor more. (I read that it was possible with the first bios-version, is it possible to achieve again without waiting for an bios update from acer ?)

    Keep up the good work !

  • 258. jorchpwr  |  October 12, 2009 at 4:18 pm

    i like this program too much, but when i run a1ctl and other soft that measures temp of cpu (notebook hardware control), a1ctl is about 10 degrees up. wich one is the ritgh temp? i have xp and windows 7, 120 gb hd, 1 gb ram.

    saludos desde mexico!!!

  • 259. SN1P3R808  |  October 14, 2009 at 6:53 pm

    ALOHA! Great program! Everything works with my AA1. I have a question, In the CPU dynamic mode what will the CPU GHz be? Will be over 1.6 GHz or what does this do to the AA1 GPU?

  • 260. Anonymous  |  October 17, 2009 at 11:39 pm


    dynamic means: 800Mhz when on battery, 1.6Ghz when on charger. Very nice power conserver. GPU remains the same I guess…

  • 261. dynamic mode  |  October 17, 2009 at 11:39 pm


    dynamic means: 800Mhz when on battery, 1.6Ghz when on charger. Very nice power conserver. GPU remains the same I guess…

  • 262. pc  |  October 18, 2009 at 2:31 pm

    When flashing to bios 3307 or 3310 I’m also getting a spontaneous shutdown when the temperature hits 50 degrees. However when I switch back to an older bios it works fine. How does the Embedded Controller Values work? Especially the Test button? Will you please explain it further for me? Thanks.

    • 263. pc  |  October 21, 2009 at 4:28 pm

      Okay, I’m on an AOA110, running Ron’s XP and settled on bios 3307. I figured out the Test button and I changed the default Embedded Controller Value for Fan Off from AF to CF and that seems to work wonders. This is based on a post further up that says to change the a1ctl.ini file value to 207 (CF is the hex equivalent)

      However, now the answer I’m looking for is what is Auto mode? More specifically, what happens when it triggers?

  • 264. Larry  |  October 20, 2009 at 10:51 am


    I started to have trouble with my realtek sound being real choppy. Sometimes it slows down like its playing in slow motion. Ihis started not long after downloading this program, microsoft office and norton. I want to delete my a1ctl program to be sure its not related to that, Can someone please let me know how to totally uninstall this program from my PC?
    I plan on removing all these programs to start over. System reboot would not work back far enough. I appreciate your help and assistance.
    ThANK yOU


  • 265. Rogi  |  October 20, 2009 at 3:30 pm

    This happened to me when I installed Internet Explorer 8. A1ctl was running just fine before that. I’ve never been able to get rid of it and accept that I’ll need to do a system refresh in the near future.

  • 266. Netbook Downloads  |  October 24, 2009 at 2:39 pm

    We have added a mirror for the latest version @ http://www.netbookfiles.com/1455/a1ctl-acer-aspire-one-netbooks-only-10/

  • 267. lan  |  October 27, 2009 at 6:28 pm

    Run the a1ctl.exe on my Aspire one laptop, and patched the driver as asked. After requested restart, I am only getting the blank screen and nothing come up.

    Please advise & thank you!

    System: XP pro with SP2. I couldn’t even try safe mode.

    • 268. Anonymous  |  November 11, 2009 at 4:23 pm

      I am having same problem, it’s very serious, CPU is effectively non-functional. Can anyone help???

  • 269. Titbits  |  November 4, 2009 at 3:18 pm

    […] won’t run under the fairly limited 1024×600 screen resolution. You can try this software a1ctl to push that to 1024×768 plus some other nice management […]

  • 270. Marco  |  November 6, 2009 at 10:00 am

    I have windows 7 on my Aspire One A150 (bios version 3310).

    The program starts, but there are 2 problems:

    – the program doesn’t start automatically on startup (I set it in option but doesn’t work!)

    – I can’t change the CPU speed.

    Are you working for a new version of A1ctl for windows 7 to fix these problems?

    Good work, have a nice day!

  • 271. bob777  |  November 7, 2009 at 8:07 am

    Hey your program works with the “Packard Bell dot.GE 02” to. Very nice prog good work

  • 272. jp  |  November 17, 2009 at 8:38 pm

    Bug on version 1:

    when starting program, “type mismatch” occur. Program don’t work.

    0.4 works.

  • 273. Coffee  |  November 18, 2009 at 2:29 am

    I love this program( v0.4). been using it like 6 months already on my D250 without ANY issue. Great stuff. I’m wondering if it actually clashes with Kapersky. But of late, when i shut down windows, can’t shut down and upon pressing Ctrl +Alt +Del to see the task manager it shows that a1ctl is not responding. and sometimes, my acer goes on hibernate when i’m in the middle of typing/surfing. When i log back in it says something abt make sure that you quickly connect to power to avoid losing your work. Later when i try to shut down i can’t and it shows the a1ctl as not responding. Hope some one can help me out. I like this program and its frustrating cause it has never caused me problems.

    Thanks Sunny and Noda

  • 274. Francesco  |  November 18, 2009 at 10:46 am


    scusa se scrivo in italiano ma non sò molto l’inglese! Volevo dirti che sarebbe bello che il programma funzionasse anche con l’acer d250!!

    Io ho un packard bell DOT S ed ha lo stesso hardware di una delle configurazioni del d250 ma ha atom n280!

    Sono riuscito attraverso i sorgenti a modificare il tuo programma per far si che mi disattivi la mia lan,wireless e webcam!

    Ma purtroppo non corrispondono i valori per il processore a 800hz e il controllo della ventola! Dove posso trovare i valori di EC? Posso far funzionare anche sul mio dot S quelle variabili?

  • 275. Petrus James  |  November 24, 2009 at 1:30 am

    Hey there everyone,
    Thank you, Noda, for producing such an amazing utility for our AAOs! Question re: downscaling w/ 1024×768… Apparently I can set a1ctl so that XP boots in the downscaled 1024×768 mode, and it does seem to work… for a second, then some process automatically resets the screen to 1024×600. After that I have to manually reset to the higher res. I’ve tried a few things (loading a1ctl last, disabling the tray icon for Intel graphics, setting the intel setting to 1024×768), but nothing works. Have you or anyone heard of this issue? Any fixes? If I could sort this out my Aspire would achieve perfection. Thanks.

  • 276. bob  |  November 26, 2009 at 7:05 pm

    Version 1.0 don’ t work on acer one 751h:“type mismatch when starting.

  • 277. Petrus James  |  November 26, 2009 at 9:23 pm

    BTW, I should mention re: comment # 263: I’m using the AOA150 when the following occurs (repost): Downscaling w/ 1024×768… Apparently I can set a1ctl so that XP boots in the downscaled 1024×768 mode, and it does seem to work… for a second, then some process automatically resets the screen to 1024×600. After that I have to manually reset to the higher res. I’ve tried a few things (loading a1ctl last, disabling the tray icon for Intel graphics, setting the intel setting to 1024×768), but nothing works. Have you or anyone heard of this issue? Any fixes? If I could sort this out my Aspire would achieve perfection. Thanks.

  • 278. Petrus James  |  November 27, 2009 at 6:10 pm

    **SOLVED** (the above issue/post). The culprit was the QtZgAcer service (which does not *seem* to be particularly important – correct me if I’m wrong), which I unclicked in msconfig. Now my AOA150 boots up at the desired downscaled res of 1024×768 automatically and stays that way. No manual re-selecting required anymore.

  • 279. SayinSober  |  December 9, 2009 at 1:21 pm

    ok i got passes the IO thing and like now the problem is wen it i start a1ctl and type in 1024 x 768 resolution it just sits there and says “fuck you i aint getting smaller” how do i fix it plz help and/or if sum1 could tell me how to change my aspire one to 1024 x 768 it would b greatly appreciated email me plz!
    not stayin only sayin

  • 280. musti  |  December 12, 2009 at 11:47 pm

    It will be a great day when a brave soul makes an LG X version of this gem…I have an X130 and sadly miss the functionality of a1ctl.

  • 281. Alex  |  December 20, 2009 at 9:09 pm

    I was having a problem. i am trying to get 1024 x 768 screen resolution, but my acer will not let me. i am running windows 7 starter on it. Does anyone know how to get it to change beyond 1024 x 600? By the way, i have tried the manuel suggestion, with going to the control panel. It does not work. when i try to input the 1024 x 768 screen resolution in the program, it does not respond. Thank you head of time.

  • 282. Aihui  |  December 29, 2009 at 9:12 am

    ARGH!!!! It does NOT work with my Acer one D250 which is running on Windows 7 Starter. I’ve tried everything, literally everything, but nothing works!

    I click on a1ctl.exe, the following message pops up:

    “Error, cannot initiate IO access”

    Can someone please help? I’ve been at this for the past 1 hour!!!!!!!!!!!!!!!

  • 283. Chavisimo  |  December 30, 2009 at 1:08 am

    I have an Acer Aspire One D250-1165 netbook. When I try to run a1ctl, I get error message “Component ‘MSCOMCTL.OCX’ or one of its dependencies not correctly registered: a file is missing or invalid” on version 0.4 and 1.0. I tried installing the VB6 runtime control and the VB6 runtime. Rebooting between each install ad I still get the same error message. Also, I have XP Home OS. Any help would be greatly appreciated. Thanks in advance.

    • 284. me  |  August 25, 2010 at 10:02 am

      check my post later in this blog…

  • 285. Bruno  |  January 1, 2010 at 4:34 pm

    I appreciated a lot the battery information and system tray icon and I would like to use it also on other notebook.
    Can you consider the possibility to edit this system tray icon as a stand alone utility?

    Thanks and regards,


  • 286. Lukeus  |  January 2, 2010 at 9:20 am

    Wont load get error shown in URL

    • 287. Lukeus  |  January 3, 2010 at 4:45 am

      Run-time error ’13’:
      Type mismatch

      • 288. Lukeus  |  January 6, 2010 at 12:21 am

        Running XP Pro, Service Pack 3, latest updates applied
        You out there Noda, haven’t seen a comment since September 18, 2009 at 9:16 pm is all

        Cheers Lukeus

      • 289. tfpp  |  June 3, 2010 at 4:05 pm

        Same problem. v0.4 runs fine on AA1 751h WInXPsp3. Version 1.0 no go. Any ideas?

  • 290. Kyle  |  January 5, 2010 at 3:55 pm

    i got it to run on my d250 with windows 7 ultimate, but it does not control the CPU speed or the fan. it actually does not do anything really. do i need to update my bios or any drivers for this to work? or does the program not work in windows 7 yet??

    this was bought a few months agoe with windows xp. i wiped everything off and installed windows 7 ultimate. most of the drivers are just what windows 7 found, besides a select few. could this be the problem?

  • 291. Kyle  |  January 8, 2010 at 1:29 pm

    i will also add that i checked my bios version and it says 1.03. nothing resembling any of the bios versions on this page. obviously this might be why it is not working. since Noda is not around, anyone else have the ability to make it work with these newer bios? also along with windows 7?

  • 292. Sunny  |  January 8, 2010 at 7:06 pm

    Hello guys,
    please this program is ONLY for AAO 110 and 150 and NOT for D250 or anything else. It is only written for 110/150. So don’t ask why it is not working. It maybe would be possible to change it for D250 and others, but that would be a lot of work…
    And this program isn’t working properly on VISTA and WIN7 because these systems limit the posibilities on some things (downscale is not possible for example). So use it on XP and 110/150 and you will have no problems.

    • 293. Lukeus  |  January 9, 2010 at 1:06 pm

      Hi Sunny,

      Thanks for the response.

      I got directed to this site from a forum discussing a strange but common freeze/lockup issue with the Acer Aspire One 751h (has to be power reset to restore). Some people thought it may have been the fan turning on too late / cooling related issue.

      Any hoos I’ve had some success with the earlier release of this app (V0.4). It appears to conserve battery life when I switch it to the 800Mhz setting

      (Im not sure if its actually underclocking to this speed or not
      As the is 1.33 GHz not the 1.6 / 1.66 GHz of the 110/150.

      It also reads my current temp but Im not sure if its activating my fan or not (I think it is :p).

      It also can enable/disable webcam/ethernet/wifi and change screen resolutions (though its not made aware of the 1366 x 768 available on the 751h).

      The good news is I’m not experiencing random freezes any longer. Though I have also upgraded the RAM to a 2GHz stick which could have also resolved the issue.

      Any way I hope this post helps any one with a AO751h.


  • […] 7. Install a1ctl for fan control and a few other tweaks. Available from here or at the bottom of this page: https://nodadev.wordpress.com/pc-projects/a1ctl/ […]

  • 295. Mark  |  January 20, 2010 at 2:17 pm

    Any prospects for a Windows7 version?

    Kind Regarrds

  • 296. quint  |  January 25, 2010 at 4:28 am

    is work on Aspire One D532h model?
    my acer netbook is not working

    • 297. Rocco  |  March 24, 2010 at 11:10 am

      Same problem with my aspire one 532h…have you any news about this???Thanks!

  • 298. G33K  |  January 31, 2010 at 4:09 am

    i have a aspire one runnin windows 7 . would like to oc if it can be. wondering if you can help.

  • 299. koblih22  |  February 4, 2010 at 10:17 pm

    HI. I´ve been running a1ctl for about 6 months WITHOUT ANY PROBLEM on my aaone150 wtih w7 ultimate. Now I´ve rebooted and I can´t start it again. Even if I´ve tryied to dwnld and run it again (and of course both of the runtimes..), only the error mesage with MSCOMCTL.OCX appears.

    Do anybody now what´s the problem and how to fix it????

    Thank You in advance! 🙂

    • 300. me  |  August 25, 2010 at 9:59 am


      After installing both files listed at top of this page:

      you need to manually extract the contents of the update patch with winrar (right click on patch and click extract files, then click OK) and copy the contents to the ‘system32’ folder of your windows install (e.g. ‘C:\WINDOWS\system32\’ ).
      If it asks to replace files say no to all.

      Hope it also works in other windows versions – if the system32 folder is protected you need a to find a way to get around that. You could try safe mode? Never used Win7 though…

      Anyways, goog luck!

  • 301. Frank  |  February 19, 2010 at 5:44 am

    Anyone find a fix for:

    runtyper error ’13’:
    type mismath

    • 302. Lukeus  |  February 19, 2010 at 5:51 am

      I’ve had some success with the earlier release of this app (V0.4)

  • 303. Salvatore  |  February 20, 2010 at 5:38 pm

    I have found a solution for everyone who is having trouble with the resolution max being 1024 x 600:D

    It works for windows 7 (i am using the ultimate edition) on the Acer One D250.

    What to do –

    1) Run regedit
    2) Search and modify all values “Display1_DownScalingSupported” from “0” to “1”
    3) Restart the system
    4) Enjoy with the two new resolutions 1024×768 i 1152×864

    It worked for me… Make sure you change the value in all four registry entries.


    • 304. David  |  December 20, 2011 at 10:01 pm

      This totally worked on the Acer Aspire One I just bought from Walmart ($228…amazing!). It’s running Windows 7 Startup. Fantastic fix, thanks!!

      There were only two registry entries to change, BTW, for me.

  • 305. For Those With Acer Aspire One Laptop - OneHitGamer  |  February 24, 2010 at 7:30 am

    […] screens small size. I thought this was cool so I just thought I'd share. Link to Noda's Dev Blog: a1ctl Noda’s Dev Blog __________________ My Personality Thank you President_Choob for the kickass avatar! Proud […]

  • 306. Giuseppe  |  February 27, 2010 at 3:59 pm

    Hi Salvatore,
    I use Windows 7 Home Edition with Acer D150.
    I have modified the value of the entry “Display1_DownScalingSupported” from “0” to “1” and I have observed that I can intall the programs with pre-requisite of video resolution at least 1024×768 (for example: the Panasonic HDWRITER), but I obtain a blue-screen if the program execute operation regarding the screen.
    Using Regedit I found two entries and not four. Is due to the different version of Windows?

  • 307. Raynor  |  March 2, 2010 at 12:53 am

    hey, this is a great program idea. However, it doesn’t seem to be working for my Acer Aspire One 532h-2588. Is this model not supported, or am I doing something incorrectly…

    • 308. Raynor  |  March 2, 2010 at 12:54 am

      Also, running on XP Home basic sp3

    • 309. xaviermiller  |  March 8, 2013 at 12:05 pm

      Hello, this solution works fine for me !

      I avoided to run Windows on my AOA because the noisy fan.

      Now I have a silent working and usable AOA in Linux and Windows!

  • 310. Matthias  |  March 2, 2010 at 8:48 am

    For all those with the unexpected shutdown problem, here is what helped me (AAO 110 with BIOS 3310):

    – go to “Configure” and there to Enable controller values
    – tick “Enable custom EC values”
    – set Fan stop to CF
    – set Fan slow to 4
    – set Fan auto to 0

    Thanks to PavelD and pc.

    For those having problems with the Run-time error ‘13′: Type mismatch:

    – I had this problem too at first
    – It disappeared once I had all the latest drivers installed (I think it was the VGA driver that made the difference)

    Hope this helps someone.

  • 311. war10ck  |  March 3, 2010 at 12:52 pm

    I liked version 0.4 more. v1.0 can do nothing but showing a messagebox with “error 13, type mismatch”, that’s not impressive.

  • 312. Sunny  |  March 5, 2010 at 8:19 am

    for all who have problems with “runtime error 13, type mismatch” here a fixed version:

    • 313. joinatan  |  February 4, 2011 at 12:09 am

      do you know about version with resolution 1024×576? av ihave problem to get the screen to this resolution, i have lenovo s10e

  • 314. primadonna  |  March 7, 2010 at 5:42 am

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  • […] Aspire One есть программа A1ctl. Она не разгоняет процессор, однако с ее помощью […]

  • 316. FireFox  |  April 1, 2010 at 7:38 pm

    Great soft!
    I’m running fixed ver. downloaded from http://maps.black-sheep-team.com/a1ctl/new/a1ctl.exe.
    Runs fine, but even patched ACPIEC keeps on writing in Event Log every 3rd second
    \Device\ACPIEC: The embedded controller (EC) hardware returned data when none was requested. This may indicate that the BIOS is incorectly trying to access the EC without syncronizing with the OS. The data is being ignored.
    Any suggestions?

    • 317. FireFox  |  April 2, 2010 at 10:28 pm

      OK, here is a workaround for those who may have the same problem.
      1. Check if C:\WINDOWS\system32\drivers\acpiec_nolog.sys is presented.
      2. Run regedit and in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ACPIEC, make sure ImagePath = system32\DRIVERS\acpiec_nolog.sys
      3. Reboot computer.

  • 318. John  |  April 5, 2010 at 8:32 pm


    When attempting to run the A1CTL program I get an error, “Error: Can’t initialize IO access.”

    This problem occurs using either version of the software 1.0 or 0.4

    Any tips?

    • 319. Rev  |  April 25, 2010 at 6:41 am

      Hey John,

      Had a similar problem with Windows 7. Try right-clicking and select ‘run as administrator’.

      Hope it works for you

  • 320. Rhino  |  April 26, 2010 at 12:32 am

    For anyone having trouble getting a1ctl to run on startup without it popping up the UAC admin box, first make sure you disable ‘run at startup’ in the config of a1ctl. Then follow the instructions here to get a1ctl to start at startup and logon using the Task Scheduler. Works a treat: http://www.sevenforums.com/tutorials/67503-task-create-run-program-startup-log.html

  • 321. WILLIAM HORN  |  May 13, 2010 at 2:04 pm


  • 322. yoon ji-won  |  May 17, 2010 at 1:37 pm

    hi sunny. i want a1ctl flor win7. my d532h’s fan is crying… and my ears crying too. hh -_-;; good luck to your next days!

  • 323. jalex  |  May 19, 2010 at 6:51 pm

    Thank you very much for your efforts to do this software! I was long looking for a fix as I can’t use some softwares needing the full resolution. Thanks again!

  • 324. Kozure  |  May 24, 2010 at 12:03 pm

    Acer Aspire One 752 (03/2010)
    Windows 7 HP:

    After starting the exe (also as admin) the error appears:

    “Error, can’t initialize IO access”

  • 326. sarah  |  June 19, 2010 at 11:48 pm

    Ok I’m not computer savvy at all, but I really need this so I can put my camera software on my netbook…

    I’ve tried several times to download it, but when I hit open, it just brings up this page over and over. Can I get a step-by-step of how to get this??? Sorry to be so helpless!

  • 327. Alex-E  |  June 25, 2010 at 8:44 pm

    I can’t disable the Touchpad although i’ve entered the full Device ID. And is it possible to add a “maxspeed” to the CPU clock settings? Even when i’m decompressing files the cpu speeds up, slows down, speeds up … all the time… i dont want it to do that 😛

  • 328. Musti  |  July 3, 2010 at 1:10 pm

    The persons who gets the failure message:” Error, can’t initialize IO access”
    should delete the program, download new one,
    and start in Administator mode

    • 329. Rusty Longwood (@rustylongwood)  |  December 30, 2012 at 5:30 pm

      Nope. Doesn’t work. AO756 running Windows 7. Still getting “Error, can’t initialize IO access”

  • 330. Rach  |  July 14, 2010 at 10:35 pm

    when i go to download the utility it comes up with a msg saying cannot find file. how do i fix this?

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  • 332. » Blog Archive » links for 2010-08-31  |  August 31, 2010 at 10:30 pm

    […] a1ctl « Noda’s Dev Blog (tags: aspireone netbook acer aspire utility) […]

  • 333. Alex  |  September 1, 2010 at 10:04 am

    It is good information, senk

  • 334. kwoo  |  September 13, 2010 at 12:41 pm

    @the devs:
    i have an ao532h and the fan is really annoying, i’m currently trying to change the source code so it works with the new model.

    i have id’d the corresponding registers in the EC.
    changing 0xb0 will change the fan speed 0xb1 can be used to read cpu temp.

    however both registers are updated periodically with the temperature, that means when i write to 0xb0, the fan goes silent for like a sec then spins back up.

    how could i have a1ctl periodically (like every 0,5sec) overwrite the register?
    i find it quite hard to follow the whole program structure since i’m used to C.

  • 335. Brenton  |  October 5, 2010 at 2:12 pm

    Help, the download links are timing out and I can’t find this program anywhere else on the net. I had it on my aspire before I had to reset it and now I need to reinstall this awesome program.

  • 336. Brenton  |  October 6, 2010 at 5:13 am

    Link working again 🙂

  • 337. ElLi0T  |  November 16, 2010 at 11:15 am

    Es la mejor aplicación instalada en mi Acer One

    Ahí va mi donación via Paypal para vosotros !!!

    La de ventanas que no podía gestionar porque los botones quedaban fuera de alcance por la resolución vertical.

    El desplazmiento vertical es fenomenal!!!!

  • 338. ACUser77  |  November 16, 2010 at 2:16 pm

    Hi there,

    any idea which tool like the a1ctl works on the Acer Aspire TimelineX 1830t to control the fan?

    This machine is hot, but its fan starts at about 40 degrees which is to early in my eyes.

  • 339. James  |  November 18, 2010 at 1:20 am

    My daughters netbook, Aspire ONE AO250, has issues with some games that require larger screen resolution. The games are too large to display so option, buttons etc are off screen.

    I tried this little program and it appears to work fine. I can change resolution etc (can scroll around window) but as soon the game is activated it always appears to large, as if it has its own desktop and resolution.

    I wonder is there any way around this. The games are Big Fish games.

  • 340. heyser layser  |  December 26, 2010 at 2:36 pm

    i download the files and they open in winrar but i can’t extract the files or use them in any way :S

  • 341. radiotest  |  December 28, 2010 at 5:40 pm


    i’ve aspier one lcd 10.1 with xp atom intel and i’ve install VB6 Runtime and oder runtime you suggest but when i try to run a1ctl
    version 1.0 or0.4 always have error MSCOMCTL.OCX

    what i have to do ?


  • 342. Hmn  |  December 30, 2010 at 9:10 pm

    What iam missing here in this program is an option to give some more screen brightness then the standard 100%, this feature is included in eeectl, would be nice to have it here too for the aspire one.

  • 343. Coxinha  |  January 3, 2011 at 2:12 am

    Hello, I have an AOA110 and windows XP SP3. The bios is 3310, and the program is just wonderful!
    But I had to do some changes in the EC values for SLOW and STOP modes to work correctly. If I leave the default values after the fan stops, the netbook just shut down. The auto mode is ok.

  • 344. Joinatan  |  February 2, 2011 at 10:28 am

    Hi, i have problem – i have lenovo s10e with intel 945 chip set and my max resolution is 1024×576… when i start A1CTL then i can´t go beck to resolution 1024×576…. can you fix that for me and next many users please? i think its suffice only add that resolution to a1ctl and it will work for me. Thank you Christian user from Czech republik

    • 345. Joinatan  |  February 2, 2011 at 7:22 pm

      i can make some donation for you – 15 dolars, for that upgrade

  • 346. dizzib  |  February 13, 2011 at 4:24 pm

    Hi, I’m getting runtime error 13 ‘Type mismatch’ when launching version 0.4 or 1.0 even when clearing a1ctl.ini beforehand. Any ideas ? Thanks.

    • 347. Jay3.14159  |  February 14, 2011 at 10:51 pm

      Same issue, with correct runtime environment installed, etc.

  • 348. David Vlk  |  February 25, 2011 at 11:40 am

    Hi. I use A1. Yesterday I plugged my VGA display to my AA1. After unplugging the external display AA1 wont return to 1024×600. I go to display propertis, select 1024×600, works ok, but after restart (or logoff) AA1 boots in 1024×600 just for a few second and then it changes to 1024×768. This happens also when not using A1ctl. Any help?

  • 349. David  |  March 7, 2011 at 1:15 pm

    doesn’t seem to work for me, I was having a lot of errors. missing runtime OCX, then type mismatch, then download the “fix” for that and set it so that the fan won’t come on (to see if it works) the fan came on anyways. I have acer extensia 4420 and it does not work .

  • 350. Frank Gründer  |  March 24, 2011 at 12:52 pm

    Doesn´t work with Win7 Ultimate x64.
    Is there a workaround?

    Best regards


  • 351. Weihnachten  |  March 26, 2011 at 10:22 pm

    Thanks a lot!! Finally my ears get some rest, I love my Aspire One, but the fan.. Thanks again, keep up the good work!

  • 352. Kantha  |  May 3, 2011 at 10:24 am

    Hi, Bought Acer Aspire One D255, with Windows 7 starter, upgraded to 2GB RAM (with lot of pain). The hissssss sound of the fan is driving me crazy, tried to install “a1ctl”, tried all the tips/suggestions in this web page, but could not get it started I get an error “can not initialize IO acces”. Did anyone had same problem? is there is any woraround for Windows7? thanks in advance.

  • 353. Anonymous  |  June 7, 2011 at 7:23 pm

    whenever i try to start it i get the error IO cannot be loaded or something i have an AA1 d 250

  • 354. zoi  |  July 19, 2011 at 2:23 pm

    ok how is that used cant get it 😦

  • 355. Anonymous  |  August 23, 2011 at 9:57 am

    i installed a1ctl, work ok, but fan only slow mode work.?

    Bad fan?

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  • 358. Harry  |  September 17, 2011 at 1:14 pm


    Looks like a very useful utility indeed.

    Took some doing, however, to get it up and running even after updating the VB runtime software. Kept getting a 13 mismatch error. Succeeded finally after replacing the main exe file with the one mentioned in message 307 above.

    Now that it does what it needs to do, a few questions about some items in configuration:

    – Is “Customer user device” the extra USB stick/drive I am using with my Aspire Netbook? If yes, what does “enable” do?

    – What are the “Embedded controller values”? What do I need to do there? What does (default?) “AF” mean in “Fan stop”? And what does (default?) 10 value represent in “Fan slow”? Same question for the zero in “Fan auto” and “Bios”. Does tweaking all or some of these items change anything? Pushing the “Test” button does not seem to do anything I’m aware of…

    All the rest is clear to me.

    Thanks again for the utility.


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  • 360. JD_Hupp  |  October 17, 2011 at 8:31 pm

    With an Aspire 4730Z under Vista, I got it to auto-start via a Scheduled Task with these specific settings:
    – General tab
    Run only when user is logged on
    Run with highest privileges
    – Triggers tab
    At log on of any user

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  • […] a utility—hack—that someone built for Acer Aspires to display at different resolutions—ac1ctl https://nodadev.wordpress.com/pc-projects/a1ctl/ . (The utility also gives you other additional controls, but at this point the display settings […]

  • 363. Anonymous  |  January 14, 2012 at 6:20 pm

    I have Acer Aspire One D257 with Windows 7 Starter. A1ctl don`t work, I can`t change the resolution display and the Patch ACPIEC swich are desabled. How can I do?

  • 364. Useful Acer Aspire One Software & Links: Artiss.co.uk  |  February 3, 2012 at 1:20 pm

    […] some useful software and sites specifically for the AA1, which I think might be of interest…a1ctl “a1ctl is a program able to control the fan speed of the Acer Aspire One netbooks, and do […]

  • 365. AVINASH  |  March 10, 2012 at 12:01 pm

    Hi, Bought Acer Aspire One D255, with Windows 7 starter, upgraded to 2GB RAM (with lot of pain). The hissssss sound of the fan is driving me crazy, tried to install “a1ctl”, tried all the tips/suggestions in this web page, but could not get it started I get an error “can not initialize IO acces”. Did anyone had same problem? is there is any woraround for Windows7? thanks in advance.


  • 366. cbj98  |  March 27, 2012 at 8:45 am

    I tried to follow the instructions, have read all comments and used several zip programs. I can not get any usable files not the 3 exe file mentioned. What gives?

  • 367. anon  |  April 13, 2012 at 8:18 pm

    wtf!? how do u make it…do something? i finally get it to extract the files and now none of them do anything

  • 368. Andres  |  August 1, 2012 at 2:17 am

    I want to return to old 1078 x 576 without downscaling but it seems don’t work. What I need to do to uninstall the program?

    Thank you

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  • 370. jorge  |  September 14, 2012 at 3:11 am

    i don’t need it any more… how i unistall it?

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  • 372. TheOtherAlex  |  November 7, 2012 at 9:23 am

    Hey guys,
    here’s how to run a1ctl on Windows 8 (basically the same as Win7):

    1. Download und unzip a1ctl.

    2. Download MSCOMCTL.OCX from here: http://www.ocxdump.com/download-ocx-files_new.php/ocxfiles/M/MSCOMCTL.OCX/6.01.9782/download.html

    3. Copy it to c:/windows/system32

    4. Register MSCOMCTL.OCX
    – Press [Win]+X to open the Windows 8 Start Menu (yes, there actually IS one 😉 )
    – Click “Command Prompt (Admin)” – the “Admin” part is important, else it won’t work!
    – you should find yourself in “C:\Windows\system32”, if not, go there (cd\, cd windows\system32)
    – type “REGSVR32 MSCOMCTL.OCX” (w/o the quotes of course)

    5. Navigate to the folder you unpacked a1ctl to, right click a1ctl.exe and click “Run as adminimistrator”. Or even better, right click a1ctl.exe -> Properties -> Compatibility -> tick “Run this program as administrator”

    6. Confirm with “Yes”


    Sadly, the screen scaling option doesn’t work; I absolutely HATE the downscaling trick to run Win8, everything’s looking like crap. “Real” 1024×768 along with screen scrolling would be much more convenient. Oh well…. at least my AspireOne is finally silent again. 🙂

  • 373. DiscoStu  |  November 17, 2012 at 2:12 pm

    Wow! That was quite something! I forgot how much of a pain it can be to get this fantastic utility to run! It’s the new Windows 7 install that’s been a nightmare though – I’ve had each of the main issues listed on here to get through, and not in a single case did the simple solution work! The easiest way is to follow The OtherAlex’s Win 8 walk though, but to modify it where needed for Win7.

    It’s installed but when I go onto the “customize notification” area, I see 2 other references to a1ctl and when I go to action them I get “this notification icon is not active” yet the program is running – strange!

    I can’t get it to autostart. It’s there in the “config” to autostart. I’ve tried going into users startup file and adding it there. Nothing. I’ve even tried to put an exception in Avast’s sandbox even though it’s not set to sandbox anything…..any suggestions?

    Oh, and the resolution always drops back to 748.

  • 374. splinter  |  January 21, 2013 at 6:13 pm

    Hi everybody,

    anyone got this working on a AAO 532h? How did you get it to work? The program is running without any errors being displayed, but it’s not having any effect on the fan.

    Would be great if someone could help me out! ~O~

  • […] Another free app, called A1ctl, by Noda, doesn’t actually let you overclock your Aspire’s Atom CPU. However, it does […]

  • 376. kent  |  January 29, 2013 at 6:53 pm

    Thank to author! I can fix noise in Aspire one d270! but program always show temperature 40 C, why 40 like vodka, why always?

  • 377. ScotttM  |  March 23, 2013 at 2:07 am

    I’ve tried all the solutions and updates. Bottom line, I’m on 64-bit and it doesn’t work.

  • 378. Peter  |  April 9, 2013 at 6:57 pm


    Is it possible to Patch acpiex.sys with nolog_acpiec.sys? in windows 8 64bit no normal acpiec.sys version can be found.. only acpi.sys and acpiex.sys

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  • 380. Diablo  |  May 14, 2013 at 3:19 pm

    hy guys!

    I have download A1ctl but there are a problem “Component ‘MSCOMCTL.OCX” or one of its dependencies not correctly registered: a file is missing or invalid”.
    So i have downloaded microsoft runtime, I’ve run it, but it says the same problem.
    I went to http://www.mp3-ripper.net/faq.htm#8 for fixed the problem but now i have “Run-time error 13 : type mismatch “.

    Any thoughts, please?

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  • […] A1CTL от энтузиаста под именем Noda предназначена для тонкой […]

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