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PC Shuts down suddenly without warning

I've been struggling with this for months and am at my wit's end. Any help anyone could offer would be greatly appreciated!

Basically, without warning, my computer, for no apparent reason, shuts itself off. No shut down. It simply shuts off, as though the power had been disconnected. (It might be worth noting that on starting it back up again, chkdsk doesn't run.)

At first, I thought it was a random occurence and likely a hardware problem; possibly the Power Supply. However, my MoBo is set to power up the computer after losing power and, after one of these unexpected power downs, the computer doesn't start back up until I hit the power button.

I've also started to notice a link to downloading. Namely, if there's multiple downloads going on, it seems to trigger the problem. It shuts down almost every night, which is when I've got utorrent scheduled to run, and I've been able to trigger the problem reliably by initiating multiple downloads of podcasts in iTunes. It also seems to happen sometimes when web pages are taking too long to load.

It's probably important to note that the computer functions perfectly otherwise. I can tax the system with the latest games or a heavy set of video transcodes without incident, so I'd have a hard time believing it would be a heat problem.

Based on suggestions from others, I have tried replacing the RAM and Network Card, but neither has had any impact on the problem.

Any help anyone can offer would be greatly appreciated.

Posted by on

  • James Allen Mar 12, 2009

    The current Power Supply is a Corsair 450w PSU

    My specs are:
    Microsoft Windows XP PRO

    Western Digital 750G SATAII 7200 rpm HDD(16Mb Cache)

    Internal Card Reader with Slim Floppy Drive Black

    Samsung 20xDVD -/+R/RW Dual Layer OEM Black SATA
    Corsair VX-450 ATX 450W Power Supply 120mm fan

    2 x DDR2 2048MB(2x1G)PC6400 800Mhz Hyper Memory with blue heatspread Kingston

    Creative Sound Blaster X-Fi Xtreme Audio Card PCI Express

    Gigabyte GF8800GTS PCI-E 512MB GDDR3

    Intel ATX E8200 CORE 2 DUO /2.66GHz/6MB/1333FSB/LGA775

    Gigabyte EP35-DS3 P35 1333Mhz
    Thermaltake Blue Orb 2 CPU Cooler
    NZXT Lexa Mid-Tower Case


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Hii, for this problem of solution, you need to change your power supply and try a new one (400 watts) power supply and than try. Otherwise there is fault in your motherboard.

Posted on Mar 12, 2009

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Hi,
As u would 1st know that there is a perfect power supply of 220-230V,
& if Yes try replacing the SMPS, If you still hve the same prob thn its, Motherboard problem, As i am a technical person & Faced many problems like these.......

Posted on Mar 12, 2009

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