I recently tried overclocking my E8400 to 3.6GHz. It's not surprising that it was not stable, but now my PC crashes even when the CPU is at the stock 3.0GHz. I'm afraid I damaged it, though the temperatures never went above 65C and I never had the Vcore over 1.3V. I haven't changed any BIOS settings that would cause problems.
It has only crashed when running Prime95 through RealTemp, towards the end of the cool-down test. It hasn't crashed in other circumstances though.
Is it possible my CPU is damaged? If not, what could be the problem?