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Everything has power but dosen't display?

Discussion in 'Hardware' started by Deanznet, Sep 4, 2008.

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  1. Deanznet

    Deanznet Thread Starter

    Joined:
    Dec 28, 2004
    Messages:
    186
    Hey, i have a pc someone gave me they said it booted up befor but, i try to start it nothing happens, it turns on i hear some sound from the hard drive but nothing,

    I swaped hard drives, samething, swaped video card, same thing.

    Whats up? lol
     
  2. Alex Ethridge

    Alex Ethridge

    Joined:
    Apr 10, 2000
    Messages:
    9,124
    Disconnect or remove all peripheral devices from the main board--floppy drive, hard disks, CD/DVD drives, modems--everything but power and video. Turn it on and see if you get any video. If you do, then the cause of the problem is one of the disconnected items. Turn it off and reconnect or reinsert the items one at a time, attempting to POST after each, until you get a failure to POST (power-on-self-test). The problem item will be the last item connected before the failure.

    If it still fails to POST after removing all the peripherals, then it is either bad memory, bad power supply or bad main board. If you have more than one memory chip, try one chip at a time. If you have only one memory chip then you'll just have to find a known-good chip to test further. Once memory is eliminated, try another power supply. If you don't have another, take yours to a shop and have them test it.

    Once you've eliminated all those parts, you're down to a bad board. And that is probably not worth replacing in an old system.
     
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