CPU Fan problem with new motherboard - howe
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Thread: CPU Fan problem with new motherboard - howe

  1. #1
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    CPU Fan problem with new motherboard - howe

    Just bought a new motherboard, cpu (i5) graphiocs card, case, memory...well a new computer apart from the dvdrw and hard drives actually.
    But problems.
    The new mobo, ASUS P8Z68-V/GEN3, when starting up tells me I have a CPU fan problem, and press F1 to see to it. Only HOW and in what way ? I can't seem to alter it or speed it up or whatever. it's in the red, at 450-ish rpm while the other fans are ripping along at double. How do i fix this ?
    The cooler is a coolermaster 212 hyper evo.

  2. #2
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    Take a look at the fan for any obvious problems--is a wire rubbing against the fan blades--any dirt or junk in there? Are you plugged on the correct header?
    Biostar TA790GX A2+ 6.0
    AMD Phenom X4 9750 CPU.
    4 Gig DDR2 Memory.
    ATI HD 5450 PCIe Video
    ATI HD 5450 PCIe Video
    500 Watt P.S.
    LG W2241T Widescreen 22" LCD
    ViewSonic VA721 17" LCD
    Envision 17" LCD
    2 LG DVD Drives
    Floppy Disk Drive
    Maxtor 120 Gig Windows 7 Home Premium 32 bit
    Gateway NV5378-U Windows 7 Home Premium 64 bit
    Acer Aspire V3-731 Windows 7 Home Premium 64 bit

  3. #3
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    You may need to turn off fan speed monitoring in the BIOS. I've run into this problem before, where the temperature controlled fan speed causes the fan monitoring to start screaming. Not the best bit of BIOS design that's ever been done

  4. #4
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    Quote Originally Posted by SuperSparks View Post
    You may need to turn off fan speed monitoring in the BIOS. I've run into this problem before, where the temperature controlled fan speed causes the fan monitoring to start screaming. Not the best bit of BIOS design that's ever been done
    Great help, that. Will check as I noticed in the manual that it does have it, assumed it was there for a reason and wouldn't touch it.
    It may be running half speed as the temps are only 30° C. So disabling it would be OK ?
    DNeilson - wasn't aware which power point being used made any difference as long as it was right for the connector.
    Last edited by Phil K; April 28th, 2012 at 08:31 AM.

  5. #5
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    There are six fan headers on that board, I was just asking if you were sure you were plugged into the right one.
    Biostar TA790GX A2+ 6.0
    AMD Phenom X4 9750 CPU.
    4 Gig DDR2 Memory.
    ATI HD 5450 PCIe Video
    ATI HD 5450 PCIe Video
    500 Watt P.S.
    LG W2241T Widescreen 22" LCD
    ViewSonic VA721 17" LCD
    Envision 17" LCD
    2 LG DVD Drives
    Floppy Disk Drive
    Maxtor 120 Gig Windows 7 Home Premium 32 bit
    Gateway NV5378-U Windows 7 Home Premium 64 bit
    Acer Aspire V3-731 Windows 7 Home Premium 64 bit

  6. #6
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    Disabling the alarm is fine these days. The thermal protection built into the CPU is such that it would suffer no harm even if the fan failed completely. And CPU fan failure is pretty rare.

    The other option, of course, is to leave the fan alarm enabled, and disable the speed control. The only issue with that is that it can make the PC quite noisy.

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