Just today Aug - 17 - 2008 I was Playing a PC video game. when I was playing the PC fan started to sound as it seems that the hard drive is hot. But to my surprised it automatically rebooted. I didn't do anything, I just played game. The PC suddenly Rebooted. My ????is, "What is wrong here?"
moved to correct forum as not a windows issue. check in the bios to see what your cpu temp is. does your videocard have a fan on it as appears to be a videocard issue not cpu?