Computer hangs before post what is the hardware problem

Hi guys PC hangs before it even reaches the POST stage, what could be the problem....
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More about computer hangs post hardware problem
  1. Welcome to Tom's Forums! :)

    This can be caused by a lot of things.

    Q - Is this a new build?
    Q - What MOBO?
    Q - What CPU?
    Q - What GPU?
    Q - What PSU?
    Q - Any 'Beeps'?
    Q - Are the fans spinning, in particular the CPU Fan?
  2. See if it posts when you remove everything but the processor and one stick of ram. You should be able to get into the bios. Does it give you a "no memory" beep code when you remove all memory? Does it give you a "no processor" beep code when you remove the processor?

    If nothing powers up (no lights, no fans spinning) then you likely have a dead power supply.
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