100% computer!!

  subaru 19:53 09 Feb 06
Locked

My pc runs fairly well most of the time, and then suddenly reactions to commands get a bit delayed...
Going into task manager the performance graph CPU usage goes straight to 100% and stays there. For ever!
This has happened several times over a few years, and Ive formatted it before now...That gets rid of it but it eventually returns. And then it goes again! And then it comes back again!!
It dont seem to paralyse the functioning, but it definitely puts a delay into mouse clicks etc.
The processes dont seem to be extraordinary....just now i checked and theres nothing too exceptional going on.
A virus ive always thought? I keep AVG on the machine, up to date.....any ideas??

  apianglo 20:04 09 Feb 06

I had a similar problem a little while ago, i eventually traced it back to a faulty bios, flashing the bios with a new programme cured mine....might help

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