Help cpu fan failed but still runs

Discussion in 'PC hardware help' started by cdxanti, Aug 12, 2008.

  1. cdxanti

    cdxanti Member

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    I switched out my stock cpu cooler for a Freezer 64 Pro from Arctic Cooling. my computer reads the message cpu fan has failed your computer will shut down yadda yadda. but when I look in my case the fan is spinning. i cant figure it out. please help.
    if you need specs please ask.
     
  2. sammorris

    sammorris Senior member

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    It may not be spinning fast enough. Look in your BIOS at the fan speed and see what it says, at full speed the cooler should be 2500rpm or so, unless the fan is automatically speed controlled, in which case you shouldn't see that error in the first place.
     
  3. cdxanti

    cdxanti Member

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    the old fan was auto control and its an hp computer so not all of the bios settings are there.
    the new fan says somthing about PWM fan control and i dont know what that means

     
  4. sammorris

    sammorris Senior member

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    Yes, the Freezer 7 Pro is controlled by Pulse Width Modulation (PWM) not voltage adjustment like older adjustable fans. If your motherboard isn't compatible with this (has a 3 pin CPU power connector not 4), you ought to turn the auto fan speed control off or you could get heat issues, or damage the fan.
     
  5. cdxanti

    cdxanti Member

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    how do i turn the control off. im limmited to what i can do in my bios
     
  6. sammorris

    sammorris Senior member

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    Hardware monitor section?
     
  7. cdxanti

    cdxanti Member

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    i just went ahead and plugged it into a 4pin and attached another fan to the cpu plug
     
  8. sammorris

    sammorris Senior member

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    Seems fair enough to me.
     

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