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Motherboard problem

Discussion in 'Motherboards' started by Chappers, 17 Jan 2006.

  1. Chappers

    Associate

    Joined: 2 Nov 2005

    Posts: 6

    I have just built my new system but I have a problem, basically it doesn’t power up.

    I have the following components:

    Asrock Dual Socket 939-SATAii Motherboard
    Opteron 144 CPU
    2 x 512Mb Corsair value RAM
    Thermaltake XP-90 Heat Pipe + Standard 90mm fan
    X800 AGP graphics card
    FORTON Blue Power 500W Power supply

    I know the graphics card is not the problem as it works in another system I have.

    When I attach the main power cable to the motherboard and turn on the power all the fans power up but no boot.

    However, whenever I attach the 12V connector it is like the motherboard is short-circuiting.

    The motherboard is balanced on 6 headers only one of which I did not manage to screw in, but it is still under a hole. Should I try removing this header?

    Also, Could the 12V connector be a problem? I notice it goes in two ways but neither seem to work.

    Could it be that I have applied too much thermal paste to the CPU and heat sink and this is causing a short circuit?

    Finally, I thought it could be the reset switch connector wired wrongly?

    Has anyone else experienced this sort of problem?

    If you can offer any suggestions then I appreciate it.

    Thanks,

    Chappers