i was doing work and suddenly my system got stuck so i had to restart. upon restarting it loaded me into temporary profile and gave BSOD on the 2nd attempt. so i formatted my system and installed windows again and after a few minutes installation it did the restarting and got stuck on loading windows. so i thought there was something wrong with my HD i did windows again and now they r working ok but get stuck and comp freezes if i run heavy software. i have intel dual core E5400 processor with 500GB BD and 1 GB RAM. please guide.