I've noticed this a bit when I was just messing around on my computer, after it has been on for a while, and it is annoying me. It keeps restarting for no reason at random times.
I know someone is going to come out and comment about temperatures, and that mine are probably too high, but that I do not believe is the case. Here's a picture to prove it.
I don't think those temperatures are too high, even though the graphics card is relatively high. But that shouldn't be a problem, since my computer has NEVER shut down while I'm playing a game, but just when I'm surfing the Internet or listening to music.
What could be the cause of this? Does anyone know?