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  1. #1
    New Lounger
    Join Date
    Dec 2009
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    Pc will not power on

    I have two home built pcs that both will not power on. They both have worked for a least 3 years until now. Both exhibit the same symptoms---both will not turn back on. I swapped out the power supplies and they both will turn on for one second and then immediately cut off. I have a biostar motherboard in one and I do not remember the other MB. I tried a 2 different power supplies in these PCs. Could it be both boards are bad?

  2. #2
    Silver Lounger
    Join Date
    Oct 2012
    Thanked 267 Times in 260 Posts
    It would have to be an event (most likely power-related) that affected both systems at the same time but then, yes that could be the case. Do you know if the replacement PSs were toasted or are they still ok? If they are ok you can try an outlet on a different circuit if they were on the same one, or on the same power strip or are both on a UPS. Otherwise you'll probably have to start pulling peripherals and internal cables until you're down to bare bones, see if you can find some other reason for not starting.
    If the replacement PSs went to god right away, then it has been my experience that the motherboard is the grim reaper though I have never had it happen to two systems like that so maybe there is another explanation in your case.

  3. #3
    Silver Lounger Banyarola's Avatar
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    Dec 2009
    Big Indian, New York
    Thanked 65 Times in 54 Posts
    I had the same symptons a while back and it turned out to be a bad video card....
    "If You Are Reading This In English, Thank A VET"

  4. #4
    Super Moderator CLiNT's Avatar
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    Dec 2009
    California & Arizona
    Thanked 609 Times in 557 Posts
    What [exactly] does the computer do when you turn it on.

    Do you hear case and CPU fans turning?
    Do you hear beeping coming from the case?
    Does anything come up on the screen?
    Do you smell something burnt?
    Does the motherboard/BIOS, or any lights come on?
    Invest a little time and energy in a well thought out BACKUP regimen and you will have minimal down time, and headache.

    Build your own system; get everything you want and nothing you don't.
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    ASUS X99 Deluxe, Core i7-5960X, Corsair Hydro H100i, Plextor M6e 256GB M.2 SSD, Corsair DOMINATOR Platinum 32GB DDR4@2666, W8.1 64 bit,
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