I put this in software b/c it seems like a software issue, although I'm not ruling out hardware. Every so often my computer will just turn itself off without me doing the deed. It isn't just a hard off either, it actually goes through the paces like normal when someone elects shut down from the start menu. It's pretty rare but it seems to have no rhyme or reason. Starts back up fine w/o problems like normal. Anybody else experienced this or have any ideas as to what may be causing it?