Could a faulty motherboard blow my power supply?

Discussion in 'CPU, Motherboards and Memory' started by Ji Pattison-Smith, Feb 11, 2012.

  1. Ji Pattison-Smith

    Ji Pattison-Smith Geek Trainee

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    I'm currently in the process of patching up an old PC, which wouldn't output anything to screen. I worked out that the problem was a faulty motherboard (by process of elimination using a fully-working PC) and managed to get hold of one which worked but had no hard drive or working optical drives for free.

    This worked beautifully - until Windows started up, when I was greeted with a message saying that I needed to activate Windows. I guess the OEM version is tied to the hardware.

    Anyway, I decided just to stick Ubuntu on it for the time being. I connected up the CD drive and put in the latest Ubuntu CD, switched the thing on, but the bios hung at the line 'Boot from CD:'. I read that a possible solution to the problem may be to remove and re-insert the battery, which I did. However, there was then no power at all. The psu didn't come on. So I swapped it out for the other one, which was definitely working a few days ago - but that wouldn't come on either. I even tried them without anything plugged in. Nothing at all happens when I switch them on. Is it possible that I've somehow shorted the motherboard, which has in turn killed two power supplies? This seems unlikely to me but I'm struggling to see an alternative. The cable and socket are definitely fine - they work perfectly well with my monitor. Am I missing something or do I need to buy a new motherboard (and psu)?

    Thanks in advance for your help!

  2. Dave35k

    Dave35k H4ck3r

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    hey have you individually tested the power supplier?? If your unsure on how to make a power supply power up without it being connected to a motherboard i can post you instructions :)

    Just a quick one but have you got the power swith jumper on the correct pins?

    Cheers Dave :)

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