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Every time my screen shuts off from inactivity my cpu fan starts spinning like there's no tomorrow. When I move the mouse and the screen comes back on the fan immediately slows back down to normal speed, but I can't ever see signs of any unusual activity going on in the task manager.

I even left the task manager up so that if there were any activity going on I would be able to see it the moment I move the mouse... but I saw nothing. So now I'm left wondering whether it might be possible that there's some process that regulates the fan speed that gets bypassed when the computer sleeps?

I would appreciate any clues that would lead me to shutting this noisy fan up.

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Did you use the Task Managers Graph? Check for a screensaver? Your sure it is the Cpu and not the GPU? Folding or Seti at idle? Use any overclock tools? Speedfan type tools? –  Psycogeek Mar 8 '12 at 4:27
    
Autodefragger maybe? –  Amazed Mar 8 '12 at 6:26
    
@Psycogeek Just looked at processes tab so I will keep an eye on the graph next time. No screensaver... power options are just set to turn display off after 15 minutes. 100% positive its the CPU fan. Not sure what you mean by 'Folding or Seti at idle?'. No tools of any kind. –  Brandon Moore Mar 11 '12 at 20:02
    
@Amazed Yeah I thought about that too, but wasn't it. –  Brandon Moore Mar 11 '12 at 20:03
    
@BrandonMoore Seti and folding, and others are programs that Can make use of an "idle computer", as a farmed out job from others. they can use 100%, chances are good you would know if you installed it. –  Psycogeek Mar 11 '12 at 20:39
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