my computer specs: P4, 512 RAM hangs after 4-5 hours of usage. I have to reboot. But there is no display and booting. I leave it for 2-3 days and restart it. It works propoerly but again it hangs after 4 hours. Ireplaced the RAM but same problem . Kindly help
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Must be a over heating issue.. Try keeping the side door(s) of your case open while in running..
check for dust (a heat insulation) while you are there and clean out if possible.