Do I have a bad motherboard?

By abowers22
Jul 23, 2008
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  1. I am trying to build a computer. I bought all new parts for this. After connecting everything, and I'm sure everything's connected right, the light on the motherboard comes on, but when I press the on/off switch on the front of the case, the fans try to turn on both the power supply and the motherboard. They only turn for about 2 seconds and that's it. Nothing else happens. I'm wondering if something was wrong with this board when I received it. Please help!
  2. Obi-Wan Jerkobi

    Obi-Wan Jerkobi TechSpot Maniac Posts: 592

    Reinstall the motherboard and this time take a look to make sure the motherboard isn't making any contact with case metal or the back I/O plate. If possible, it might be worth it to try another power supply out and see if that works. If those don't work, try reinstalling the CPU and RAM, maybe you didn't line the pins up correctly or not enough contacts are touching.
  3. savythirsty

    savythirsty Newcomer, in training

    try turning the system on without any Ram memory inside, if it beeps your mobo is ok if not you got a problem, also try a different power supply, try reseating the spaghetti cable and the 12 v
  4. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    I've had brand new CPU fan do this too (often)
    Try unplugging the fan and turning on (just for a moment to test it)
  5. CCT

    CCT Newcomer, in training Posts: 3,556

    CPU heatsink - did you apply paste/take off the protective tab?
  6. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    new heatsink are already pasted
    But I agree with you about the protective tab; I've done that before :(
  7. CCT

    CCT Newcomer, in training Posts: 3,556

    Aftermarket heatsinks ARE NOT already pasted (at least mine wasn't).

    But, you just carry on!


    :)
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