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Case Fan runs a full speed

Last response: in Components
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June 27, 2009 10:54:06 AM

I started my desktop yesterday and the case fan runs full speed and won't slow down. I have no idea what has caused this. What do I need to do to correct the fan problem? What accutual controls the cabinet fan speed? Thanks for your help.
June 27, 2009 12:31:16 PM

How is the fan installed?
Taking power directly from the PSU? Or plugged into the motherboard fan headers?
June 27, 2009 12:32:35 PM

Or are you saying that before yesterday your fan was running at a slower speed but is now only running at full speed?
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June 27, 2009 4:44:25 PM

The fan is plugged into the mother board. The fan was running at a slower speed but now its full out. The only time I've ever noticed fan noice was when I was putting a heavy gaming load on my system or having 10 or so IE open at the same time. Thanks for you help.
June 27, 2009 4:56:16 PM

Are you using a gpu app, or say Sandra, or especially Everest or maybe EVGAs precision?. Sometimes Ive seen where 1 of these apps activate fan control by just reading fan rpm, maaybe a bios glitch
June 27, 2009 5:22:30 PM

No I'm not running any app, I will review the Bios thanks.
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