My computer config is
P-IV
1.7 Ghz
512 MB Ram

it started dunno how - but i located blaster worm in my pc - and installed fixblast from symantec removed it - and it was running fine.
but than my computer started to freeze every 5-10 minutes.
I formatted my hard drive - deleted the partition i had and re-installed xp ( 3 times now) to end up with the same problem.
I thought I might have some problem with the hardware - tried changing the RAM - but still the same thing.
It runs fine in safe mode which suggested me that i dont have the problem with the hardware - but when booted normally its the same problem.
I see my CPU usage reaching upto 100% whereas i am not running any programme - and than suddenly it freezes leaving me no other option than to press the reset button.

Can anyone help please as its been a nightmare for me for more than a week now.

Thanks for the Help
da-funk