Solve : Fan running Super fast?

1.	Solve : Fan running Super fast?
Answer» Hi I have a Dell DIMENTION 8400 fan that is running super fast when I start up the computer. I think its the cpu fan, Its right next to the POWER SUPPLY and has a heat sink looking thing next to it, anyway running windows xp on it 4 gb ram, Never seen this problem before on any computer. Any ideas thanks....You should clean the computer out with a can of compressed AIR, it's probably pretty DUSTY in there. Clean out all of the fans, your heat exchangers and maybe replace the thermal paste.Looks familiar on different sites by searching for Dimension 8400 noisy CPU fan.

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