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I recently purchased a new Acer D270 netbook and observed that its fan is continuously running. Although fan was not making any audible noise at all i thought of using Acer Aspire One Temperature Monitor and Fan Control software even though it mentioned to use the software at your own risk I installed it on my netbook.

Now as soon as I ran it my fan speed increased 2 to 3 times the original speed. So, I uninstalled it and restarted my netbook. Now I am observing that even after uninstalling it my fan is running at a faster speed(may be 1.5 times) than when I had not installed it.

So, my question is why am I observing this behavior in fan speed and what can be done to reverse the effect of the software.

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Did you have any luck in the end? –  James Jun 22 '12 at 9:30
    
@James: I re-installed windows as I was going to try ubuntu also. So, now everything is working fine but nowdays I just use linux. –  RanRag Jun 23 '12 at 7:13

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up vote 2 down vote accepted

Almost all computers are going to need at least one fan running all the time to avoid overheating so I would avoid using unproven applications like that one which could cause all sorts of problems.

  • First, make sure you have a backup of anything important.

  • I would suggest you try reinstalling the chipset driver from http://support.acer.com/product/default.aspx in case that program has modified anything.

  • It may be worth accessing the BIOS to see if there are any options there for controlling fan speed. When you start up the netbook, it should tell you on screen which key you need to press to access the BIOS.

  • If the fan is still not functioning normally you might want to try SpeedFan to see if you can set the fan speed to normal levels.

  • Lastly, if SpeedFan is unable to set fan speeds you could try updating the BIOS from the Acer support page in case the ACPI functionality has been improved. This should be a last resort as it could potentially mess up the computer.

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I would just add/clarify that if the software made any changes in your BIOS (such as turning off automatic fan control in order to allow the software to handle this) then resetting your BIOS to defaults should return the fan operation back to normal. –  Bon Gart Jun 11 '12 at 11:43
    
I accessed the BIOS there are no setting for fan at all. I also tried speedfan and it is now showing any FAN at all when I click configure in it because there is no default fan option there. –  RanRag Jun 11 '12 at 12:35
    
@BonGart: Are you talking abt the load default option in BIOS.? –  RanRag Jun 11 '12 at 12:36
    
@RanRag Yep. When you got the netbook new, the settings in the BIOS were at the defaults. So, choosing the 'load default" option in BIOS would return those settings to how it was, when it was new. This won't affect Windows settings, but if that Fan software made any BIOS changes, loading the defaults will revert them back. –  Bon Gart Jun 11 '12 at 12:55
    
@BonGart: I tried that nothing happened. One more thing to install chipset driver is it necessary to first uninstall it or I can directly run the setup file I downloaded. –  RanRag Jun 11 '12 at 12:59

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