end of blue screens?

A pattern for my computer crashes finally began: they would happen at increasing frequency until the OS wouldn't even launch but then would work again after sitting off for a few hours. It is overheating. Consulting with the tech at OTV it was determined that it would have to be the processor heating. He noticed that the thermal paste was not right (probably because I didn't apply it correctly... or at all, don't remember) so he cleaned it up and put a fresh layer on and now it seems to work again.
We watched the second Pirates of the Caribbean movie this evening; borrowed it from Kevin because William is interested in the story behind the Lego video game