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CPU fan spins up once on boot then stops; otherwise boots fine

Last response: in Systems
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July 5, 2011 5:53:25 PM

Hi,

After being away for a weekend, I came back to find the PC had shut down. Upon starting up, the BIOS reported that the CPU had overheated and that "one or more fans have failed." After restarting again, the message goes away and it boots into windows, but the fan doesn't work. It spins once when I turn it on, then just stops, but it nudges slightly back and forth now and then. Nothing physically obstructing the fan.

I'd really appreciate some help. A bit lost on finding out where the problem lies (fan, PSU, mobo). Thanks!

Mobo is Intel DG45FC. Setup has been running fine for about 3 yrs now.
a b B Homebuilt system
a c 89 à CPUs
July 6, 2011 1:28:51 AM

get a new fan
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July 6, 2011 6:57:03 PM

Could it also be the PSU or mobo? How is it possible to tell
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a b à CPUs
July 6, 2011 8:23:36 PM

run something intensive and see if the fan kicks on.
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a b B Homebuilt system
July 6, 2011 8:28:07 PM

"one or more fans have failed."
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a b à CPUs
July 6, 2011 10:23:31 PM

genghiskron said:
"one or more fans have failed."


if your talking to me then the reply button makes conversation go easier.

also i know that it said that but its obviously wrong if the fans turn. if it is the cpu fan that is spinning on start up then damage would be hard to do in the time it takes to start an intensive program and to see if it spins faster.

i once got a message the my gpu fail, rebooted and the gpu is fine. yeah the gpu got hot or something and failed shut down but that doesnt mean that it was broken it just meant that i needed to back off my overclock.



to the OP, i think more info is needed in order to figure out whats wrong. when you say "nudges slightly back and forth" do you mean the blades move but just a little like its stuck? also when you say you start up the pc and the fan spins "once" are you saying it spins one revolution or spins up fast then stops and never spins up again?
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