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Thread: cpu fan not detected...

  1. #1
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    cpu fan not detected...

    hello

    i have a msi kt3 ultra mobo. boots up, everything is fine, but my mobo will beep constantly, which i read the beep codes mean cpu is overheating (which its not obviously, i just booted!), and i get a msg on the screen that says cpu fan not running....but, it IS running. i see it, i even put my tongue on it to verify the fan is on.

    ....(later) ive had my system booted up now for like 9 hrs. my MSI Pc- Alert program says my cpu is running under the right temps...so should i just turn cpu fan detection off in the bios?

    lol.

    any ideas? sensor?

  2. #2
    Head Honcho Administrator Reverend's Avatar
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    Make sure the Fan is connected to the correct header on the mobo. Normally labelled FAN1 or FAN2.

    How old is the CPU fan ? The sensor or sensor wire may be faulty.

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  3. #3
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    theres only one.. called CFAN1.

    i guess i could buy a new heatsink fan, but..it IS working, so...i dont know.. iwas just inquiring.. thx

  4. #4
    Titanium Member efc's Avatar
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    Before I bought a new fan, I would remove heat sink and fan, clean cpu and heat sink with solvent, apply Quick Silver or other heat transfer grease (per directions) and reinstall. Be careful not to damage the CPU.
    Last edited by efc; September 28th, 2003 at 19:18 PM.
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  5. #5
    all bets are off... TZ Veteran SupaStar's Avatar
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    Originally posted by beebster
    theres only one.. called CFAN1.

    i guess i could buy a new heatsink fan, but..it IS working, so...i dont know.. iwas just inquiring.. thx
    Is it old? Maybe one of the 3 wires is damaged. In that case, the 2 that are working would be the 2 power ones, and the 1 that isn't could be the signal one.

  6. #6
    Super Moderator Super Moderator Big Booger's Avatar
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    In addition to all the great suggestions above:

    Have you updated the BIOS on this motherboard recently? It could be a fault in the BIOS itself causing the screwup with the beep codes..

    It could be a faulty CMOS though I doubt it..

    Check for a BIOS revision, but be careful as you can render your motherboard useless if you flash your BIOS incorrectly.

    You also might want to try a third party motherboard monitoring solution:

    http://mbm.livewiredev.com/download.html

    Another program you might want to try:

    http://hp.vector.co.jp/authors/VA002.../download.html

    See if your CPU is overclocked and running hotter than it should be...

    who knows.

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