I have a AMD 1400 cpu. It is overclocked but don't know if it is overclocked to 1400. But the cpu fan was like a jet plane, so I bought a thermaltake 7+, installed artic silver and booted it up. It was running and I guess about 10 seconds into it I switched the fan from high to med. and then back to high. The whole pc just shut off. I had the bios set to shut it down at 70c. So I look at the thermal paste spread and find I skimped a little,(not all the way covered) so I clean it up and redo the spread and when it boots up I get no beep or video. It just sits there and runs but that is it. Did I cook that cpu that fast? Any way to trouble shoot? thanks