I was using my computer regularily the night before. When I woke up the next morning, I couldn't get my computer to boot, and it took over a minute to get into safe mode. After many restarts, I finnally got my computer to boot, however it took almost a full minute more that it normally does. Finally, when I get it to boot, i'm having problems playing back video and using the computer, it's freezing up on me. One time, when I was starting a video, I got a bad_pool_header blue screen of death. I don't understand how this could have happended... Anybody have any ideas?