CPU Fan Failed Error

Custom / CUSTOM
January 19, 2009 at 22:10:18
Specs: Windows Vista, AMD Athlon 64 X2 3800+/ 4Gb Corsair
Recently, I received a new case for my computer. After taking everything out of the old case and putting it in the new one, all of a sudden I get a CPU fan failure error and it tells me to service my PC. But I can physically see that my fan is working. Yesterday I installed a new CPU fan in hopes of the error message going away, but it still does it. I've tried going into BIOS and changing it but I cannot find a Hardware section or anything that has to deal with a CPU fan. Should I purchase a new mobo or just ignore the error?

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January 20, 2009 at 05:15:55
If it was working OK in the old case, you must have done something wrong when you did the swap. Don't just randomly replace parts...you need to troubleshoot! It's most likely something simple. Are you sure the fan is connected to the right header?

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January 20, 2009 at 06:00:29
i have known this to happen before when i have changed a motherboard or fan and the 2 don't seem to recognise eachother correctly. Sometimes i have faound a setting in bios where the fan fail warning can be disabled. often on same page as where it shows the temperatures and voltages. Not all PCs have such a bios page eg. if it is a make like Dell, Compaq etc they seem to have very limited BIOS options.
Obviously disabling the warning means that if the fan fails in future it will not warn you.
I agree with Jam about the header. It can be very easy to use the case fan header by mistake instaed of the cpu fan header

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