After upgrading my friends computer, I took it home to install Windows on it (As far as they know, anyway. It was really becasue of the mother-friend bitching over mascara and other dumbass things, and I couldn't stand it.
). I took it back to my friends and the fan is already groaning? It was also in the car for a half hour - 45 minutes, so I'm also thinking that the cold probably got to it and it just has to warm up.
Oh, and it's a Sempron 2800+