CPU Fan Error (First Boot)

Discussion in 'General Hardware' started by Black0ut, Mar 4, 2012.

  1. Black0ut

    Black0ut Active Member

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    I just finished building my pc and everything works fine but I got the "CPU Fan Error". The fan is spinning fine and it's running at 29C at idle. Any ideas on what's wrong?
     
  2. Pill Monster

    Pill Monster Banned

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    Check the CPU fan low rpm alarm in the BIOS, it may be set too high...
     
  3. alanm

    alanm Ancient Guru

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    I've had that issue on more than one board. I just disable the fan alarm and rely on the CPU temp alarm.
     
  4. mrmonsoon

    mrmonsoon Master Guru

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    I had this on my old motherboard...

    The motherboard expects a fan attached to the 3 or 4 pin cpu fan header...

    If it does not detect a fan, it thinks your fan failed and starts an alarm.

    I just ended up getting a small fan to attach to the cpu fan header and run it slow as to minimize noise!!!:nerd:
     

  5. Black0ut

    Black0ut Active Member

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    I have my cpu fan attached to my cpu fan header.
     
  6. k1net1cs

    k1net1cs Ancient Guru

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    Like everyone else has said, just disable the low fan speed detection on the BIOS.
    I also had this warning when I have a Scythe or Noctua silent fans installed as CPU fan.
    It turned out the initial RPMs for these were under the speed threshold, thus spewed out warnings.
    If you're paranoid about your installed fans, you could set it to a lower speed threshold, otherwise you should just disable it and rely on temp readings (and your ears).
     

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