Got blue screen last night. What could have caused it?

Here is the scenario. A few days prior, I OC'd my GPU. Everything has been going great with that, but im still slowly tweaking it. Last night I installed my new H60 liquid CPU cooler. The computer started up with an idle temp on the cpu of 28 degrees C. Fast forward half an hour and im stress testing my GPU on the same settings that I had previously found to work pretty well. All of a sudden, the entire computer crashed and I had the BSOD. I don't think it would have been the GPU that caused it, since the temp of that at the time of the test was only 80C (Hot, but not enough to crash it.). CPU at the time of the crash was only about 34C.

Any ideas? I don't know what could have caused it. Reapplied the cooler with some fresh thermal paste and it is now at 25 degrees. Computer appears to be running great, but I am worried that it might crash again. I need to get this resolved as I plan to OC my CPU with this cooler.

EDIT: Here are basic Specs...

- ASUS M5A87 MoBo

- GTX 560 Ti

- AMD Phenom II 955 @ 3.2 GHZ

I would temporarily undo your overclock on the GPUand then do the test again @ stock, just so you can be sure it's not the problem.

Maybe the GPU needs more volts.C_Rule

I would temporarily undo your overclock on the GPUand then do the test again @ stock, just so you can be sure it's not the problem.

BigBoss154

[QUOTE="C_Rule"]Maybe the GPU needs more volts.yentlequible

Ok. How much damage can be caused by continued blue screens if I do get more?yentlequible

Well...nothing really. Unless you go absolutely crazy with the clocks and voltages.

I've had 2 Bluescreens playing Battlefield 3 and when turning on the PC it sometimes says "boot failure because of overclocking" Nothing bad has happened so far... yet :P