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Need to find a short

My desktop died, again. It died a couple of days ago, I traced it to the power supply. I picked up a new one with my fingers crossed and Threw it in. The pc powered up (wasn't before obviously) but would not boot from HDD. I put in my xp cd and was going to try to do a repair. I still had the side of the case open and I moved some wires just a little and it died again. Lost the PSU. I obviously have a short somewhere but I have no idea how to locate it. I would rather rebuild using the components I have, Graphics card, tuner, DVD roms, etc.. but I am worried that When I put it together, there may be an issue with one of those and take out the new system. Does anyone know how to locate the exact location of the short. Remember I am losing PSU's and do not want to do any trial and error type troubleshooting. Thanks.
seth

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  • seth veloso Jul 18, 2009

    I belive we got it fixed. The first psu fried, could hear it whining, the second one is still good, worked after unplugging it from the mobo for a bit

  • seth veloso Jul 18, 2009

    Hey man, thanks for your response but we got it fixed, the mobo is bad. The second psu is still good, the mobo was locking it up. It would work again after unplugging it from the mobo then back in again.

  • seth veloso Jul 18, 2009

    my bios setting? not sure how my bios settings would keep my pc from powering on lol

  • brownleopard
    brownleopard May 11, 2010

    It could be the molex connector on the motherboard is loose and/or faulty. If you hold the wires stable and move just the connector does it still shut off? Also, is the wattage from the p/s high enough to run your system? I've seen people swap out p/s for a 300 watt when their video card and CPU take almost that much at full load. Toss in the HDD and DVD/ROM and the system goes silly.

  • Dick
    Dick May 11, 2010

    When you say, "lost the psu" that means it is broken and no longer usable to me. How have you tested this? Your description of the problem makes me suspect the motherboard may be mounted improperly, shorting out on one or more metal spacers installed underneath the motherboard for mounting a different board.

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Sounds like you may have lost your BIOS setup. Go inand setup for default and see what happens

Posted on Jul 18, 2009

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