It all started with a BSOD while i was playing BF3,4 days ago.
After rebooting,another BSOD came up just after Windows 7 startup,so i decided to run memtest to check the RAM,but after 3 hours it showed no errors.
Then i tried to reinstall Windows 7,but the bsod still occurred randomly,and sometimes after rebooting my pc could not even startup.
Also,i overclocked my ATI 6850 6 days ago,could that be part of the problem?
Thanks for your time