Just googled it. Did you happen to do that?
It's your CPU overheating. Just buy some new thermal compound for like 5$ and read on how to apply it CORRECTLY. Problem solved. If that doesn't work, try getting a new heatsink. If not then try new ram. If not then, just replace every other part in your computer.
Btw, solutions are ordered least to most expensive if you didn't figure it out.