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Computer turns off randomly and sometimes fails to boot... which component is broken?

By Mesothere
Feb 24, 2012
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  1. Hi guys, not sure if this is the right forum to post this, but any help would be greatly appreciated!

    Recently, my computer began shutting off instantly when I was playing any particularly resource-intensive games (specifically Space Marine). Initially I had guessed it was overheating, so I cleaned out all of the components in my PC and restarted, but I was met with the same problem repeatedly.

    I had then assumed that the fault was with the PSU, so without any to spare, I ordered a new one. Upon arrival I put it into the PC, but it whirred noisily and smelled like burning. Clearly broken, I sent it back.

    A few days later I got a new one, put it in the PC and all was good, the PC got past the boot stage and I booted up Space Marine again, but once more, it broke down and shut off instantly after a few minutes of playing.

    I was pretty sure the power supply wasn't likely to have broken three times in a row, so I tried it in another PC and it worked fine. After that, I tried disconnecting each component in turn, ruling out (I think) the DVD Drive, BluRay drive, both Hard Drives and the Sound Card. I tried taking out my graphics card and replacing it with an old one of mine, an 8800gt, and the PC booted up. I was pretty sure that was fixed, because I could play games for a while with no issue. Eventually, however, it crashed again.

    Interestingly, whenever it does crash, I can't boot up for a short while, the fans whir for a second and then nothing happens.

    I'm totally out of ideas, so any help would be greatly appreciated!
  2. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,231   +234

    The motherboard is shot, probably because of the initial bad power supply
  3. Mesothere

    Mesothere TS Rookie Topic Starter

    Thanks for that :) Will see to buying a new computer then :(
  4. vectorsigma32

    vectorsigma32 TS Rookie Posts: 152

    amm check to see if ur mobo is under warranty if it is send it away for repairs

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