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why does my computer shut off?

Discussion in 'Tech Talk' started by matt3310, Nov 13, 2004.

  1. matt3310

    matt3310 who me???

    334
    0
    Jun 9, 2002
    Arkansas
    my computer shuts off when ever it wants to then restarts. for no reason!!! HELP!!!!!!!!!!
     
  2. paulgla

    paulgla

    5
    0
    Nov 12, 2004
    MASS
    More info? Did it just start happening, have you installed anything recently that caused it, how old is the computer, what is the operating system, etc, etc.
     


  3. chevrofreak

    chevrofreak Senior Member

    2,696
    0
    Dec 27, 2001
    Billings, Montana
    If you're running Windows 2K/XP look in the Event Viewer, located in the Administrative Tools.
     
  4. fastvfr

    fastvfr Ancient Tech

    2,344
    0
    Mar 28, 2001
    SW Oregon
    If this is XP, right-click the My Computer icon and select Properties> Advanced tab> Startup & Recovery and UNCHECK the tick box for Auto Restart On System Failure. This may let you see an error code that wasn't visible since the rig was being told to restart.

    If you aren't protecting your PC by running an uninterruptible power supply between it and the wall outlet to filter the current, power line noise and fluctuations can cause this.

    If you have a fairly powerful PC, heat buildup or a cheap/failing/stressed power supply inside the case can cause this. Leaving the case open for a few days before moving on to the other steps is a very wise plan of action, since this can help you eliminate thermal issues from consideration.

    Download MBM5 (Motherboard Monitor v5) and install it to see if the voltage from the various PSU rails is at or above specs.

    If it is truly sporadic, and it does not increase in frequency during a typical session, then the problem may be a loose, dusty/corroded or damaged cable/connector/module/card.

    Try removing the video card, memory modules and any PCI cards and reinstalling them. Just lift them out of their slot/socket and then push them firmly back into place. Ground yourself first and often during this by making contact with the case's PSU.

    Unplug the IDE/floppy/power cables and reinstall each plug firmly but carefully.

    If all this doesn't help, remove all but one RAM module and run MemtestX86 from a floppy to see if that RAM stick is failing. If there are no problems with it, and you have multiple sticks, shut down and replace that module with another and retest with Memtest.

    As with any sort of machine, troubleshooting PC's involves following a logical set of steps to eliminate the most likely, most common problem before moving to the next likely cause, then negating that possibility. When you find the problem, you'll know it.

    Good luck,

    FastVFR
     
  5. matt3310

    matt3310 who me???

    334
    0
    Jun 9, 2002
    Arkansas
    Thanks for the responses, this computer is new. And Im running xp on it. it will shut off about 5 min after it is started the after the restart it will stay on for as long as I want it to.
    Thanks
    Matt