Because there always has to be something wrong with my computer.
I've experienced a blue screen 3 times over the last two weeks or so that shuts down my laptop. It has always happened while trying to run my RealPlayer video player.
The first two times it happened while trying to open the player(Though by no means every time, maybe once ever 10 to 20 times). All I was able to read from it was a header that said "BAD_POOL". The last time it happened during the end credits of a movie I had watched and the header wasn't there.
Toshiba Satellite L305-S5944
Vista Home Basic