computer rebooting by itself
sometimes when I'm using the computer, no matter what I'm doing, netsurfing, listening to MP3's, whatever.. sometimes, without me touching a key or the mouse, the screen goes black and the computer just reboots all by itself. and if I've got netscape open my bookmarks will be gone when it comes back up.
and when it does come back up, the CPU Usage will be at 100% continuously and I won't be able to run any programs because the computer is so slow.
I've run virus programs and spyware killers and nothing ever came up wrong. it only happens like once every month or two, which doesn't bother me that much, but it's happened twice since yesterday.