windows 7 ultimate issue or hardware problem

mahendran

Journeyman
My toshiba satellite c50 model laptop freezes/hangs for the past one month.when press ctrl,alt,delete once,the freeze/hang issue solved temporarily.

I had formatted the c drive and reinstalled windows 7 ultimate.still same problem,even before installing drivers.

installed licensed version of K7 antivirus and had a full scan too.

what could be the issue.is it a hardware issue.
 
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