Windows 7 unable to control my cpu fan


  1. micromidas
    Posts : 1
    W7 and Ubuntu
       New #1

    Windows 7 unable to control my cpu fan


    Hardware specs:
    Asus W3J Notebook
    Intel Mobil 945PM Express chipset
    Intel Core 2 Duo T2400

    After booting and using the machine for a while, Windows 7 will not turn on the cpu fan as the processor starts heating up - and after a while it will hit critical temperature and shut down. If I reboot or go into sleep mode however, they will be turned on. I assume this is done directly by the BIOS as Windows 7 now will not slow down my cpu fan once my processor starts cooling. I did not have this problem in XP, which was what I used prior to a fresh install of W7.

    So in effect, Windows 7 isn't able to control my cpu fan at all - and the temporary workaround is going in and out of sleep mode when my cpu temperature hits around 60 degrees celsius in order to get a decent speed/noise ratio on my fan.

    Steps taken to try to fix this
    * Updating the chipset drivers
    * Installing ACPI drivers from Asus
    * Cleaning the CPU fan and blowing out dust
    * Installing various Asus performance tools and other misc. utitilites - none of them are able to do anything but get a reading
    * Booting into Ubuntu from an USB stick, to check if it could be a BIOS problem. Ubuntu is able to control my fan just fine.

    I am completely at a loss as to which step to take next. Any help or point in the right directory will be greatly appreciated :)
      My Computer
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  3. johnhoh
    Posts : 1,363
    Win7 pro x64
       New #2

    the guy in the last post seems to have fixed it but its hard to understand

    ASUSTeK Computer Inc.-Forum- Vista ACPI Fan control trouble
      My Computer
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