Last night I installed windows!!! I then installed half life 2 and cs source. The windows partition was horribly fragged so I figured id defrag while I sleep. I woke up this morning on the computer was off. I went to turn it on, the white light lit for a half second and then shut off while, from the sounds of it the dvd drive would begin and then shut off as well. Tried that a few times and nothing. I figured I'd try and hold the power button. Big no no. It sounded like an alarm went off and the white light start flashing... Immediately let go. Looked up on my other computer how to reset PRAM, had no effect. At this point I was stunned. Tried without the power hooked up to it. Nothing. Then I took the battery out and tried. Viola! It worked! Now everything is back to normal! Anyone ever experience this or possibly know what happend? Did my computer overheat while I was sleeping?