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PC keeps restarting?

Discussion in 'Desktop & Laptop Computers Forum' started by witters, Jun 25, 2005.

  1. witters

    witters
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    Every so often our PC just restarts for no apparent reason. It has been checked for viruses but is clear.

    Can anyone give me any idea what this might be please?
     
  2. MarkE19

    MarkE19
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    Have a look at This thread as it sounds like a similar problem.

    Mark.
     
  3. Dillz

    Dillz
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    I've just had this happen with my computer. I re-installed windows and it didn't fix it. Luckily a friend has a similar specced PC so we could swap bits.

    A week ago we swapped processors and now all is fine. When I removed my processor fan which is a coolermaster fan sitting on copper fins (can't remember model) I noticed that the top of the fins were bunged up with dust, so I suppose my processor was getting a bit hot which caused the instability.

    It's a bit difficult to narrow a problem like this down though, but I tried;

    Leaving case sides off to see if being cooler would help
    Removing and re-installing drivers,
    Re-installing windows
    Taking one of the dimms out, and trying different slots
    Borrowing a mates dimms
    Borrowing a mates graphics card
    Trying a different processor.

    Guess I'm lucky to have a mate who doesn't mind me borrowing his CPU :cool:
     
  4. witters

    witters
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    Thanks for that.

    I've re-installed XP a couple of times with no effect.

    It is pretty dusty inside. I'll blow it out and see if that has any effect.
     
  5. mik

    mik
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    When you say every now and then is it when you are working the pc or is it really every now and then? could be a memory problem, search google for memtest86 and run it, though be warned it takes a while so maybe run it overnight
     
  6. pringtef

    pringtef
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    Does sound to me either a memory or processor overheating issue.

    Sometimes just removing the memory chips, and reseating them can make a difference.

    If your motherboard comes with software for monitoring temperatures of the board and processor, i'd maybe check to see what temperatures it's running it. Could be worthwhile underclocking the system to see if stability is improved.
     
  7. witters

    witters
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    It's erratic, although it's always when it's in use. We've had it around 18 months with no prior problems.
     
  8. mik

    mik
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  9. dekoded

    dekoded
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    You said that you've checked for viruses, but what about trojans/spyware? These could also cause problems.
    ( MS giant beta antispyware is good)
    It could also be a driver issue, as these often cause instability problems.

    If you're using winxp then you could disable restarting after an error:

    1. Click the Start button.
    2. Right click the My Computer icon, and then click Properties on the context menu that appears.
    3. Click the Advanced tab and then click the Settings button in the Start-up and Recovery section.
    4. Click to remove the check next to Automatically Restart checkbox and then click OK.
    5. Click OK. The system will no longer automatically restart after a Serious Error message appears.
     
  10. Da_Rude_Baboon

    Da_Rude_Baboon
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    Have you upgraded the PC or made any changes to it as it could also be power related?

    By far the majority of crashes are caused by power supplies and memory.
     
  11. witters

    witters
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    No I have not upgraded it at all.

    I cleaned it out with compressed air today. It was pretty dusty. I removed the memory as well, which was also dusty, and out it nack.

    Hopefully this may have cured it.
     
  12. pj

    pj
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    my pc kept crashing and freezing for no apparent reason, i rebuilt it with new memory, processor etc and it still did it! i THEN checked the event viewer and found it was doing it everytime windows automatic updates tried to update! i switch all instances of this to off and so far (fingers crossed) its been running fine for 2 weeks straight now
    i cant remember the exact file names but it was something like wcault.exe and wupd.exe that were causing the faults, worth looking in event viewer too see what the deal is
     

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