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When computer is turned on, shuts down by itself in a few seconds

Discussion in 'Hardware' started by BugMeNoMore, Jul 18, 2006.

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  1. BugMeNoMore

    BugMeNoMore Banned Thread Starter

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    Hi all,

    When I turn on my computer, it stays on for a couple seconds then shuts down, the monitor never activates so I cannot get into the BIOS. There are no beeps when I turn it on. The first time I booted it up since I put in the new processor, RAM and video card, there was a loud pop on the first boot, I have no idea where it emanated from.
     
  2. silvershield

    silvershield

    Joined:
    Jan 20, 2005
    Messages:
    469
    ...Ouch


    You might want to look inside and take off the CPU heatsink and look at it and make sure the CPU isnt damaged first..Next I would check the RAM and make sure it doesnt look burnt, and last, the video card, and the motherboard. If nothing is burnt or damaged, I suspect the system fan or the CPU fan.
    Make sure they both operate.
     
  3. DittoDude

    DittoDude

    Joined:
    Nov 14, 2001
    Messages:
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    You might want to check the power supply too, especially if it's a Dell.
    I just replaced one in my 17 month old Dell Dimension 4600.
    If something electronic popped, you should be able to see and/or smell it.
     
  4. BugMeNoMore

    BugMeNoMore Banned Thread Starter

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    Nothing looks burnt, I took it all apart and put each piece in separately. Even with everything out, including the CPU, the power comes on for a bit and then goes off in a few seconds. If I try it again after that it will come on and shut right back down in less than a second. Only if i leave it for a while will it go back to powering up for a few seconds then shutting back down (only on the first boot).
     
  5. silvershield

    silvershield

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    Ahh.......Disconnect your motherboard from the power supply. See if your PSU fan stays on for longer than it would before. If it does, youve got a faulty motherboard most likely. If it doesnt, replace the PSU.
     
  6. BugMeNoMore

    BugMeNoMore Banned Thread Starter

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    Hey, thanks silvershield. Yea, I forgot to mention that I tried the PSU on another comp and it ran fine, so it just may be the mboard after all. Very depressing after just buying the CPU, RAM and AGP video card to go with the board. Sigh.
     
  7. silvershield

    silvershield

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