I just recently replaced my motherboard and upgraded my processor to dual-core, so naturally I just reformatted my computer. I decided to go with windows media 11 with the new upgrade. It's been working fine for about 2 days now since I did my reformatting but today it started screwing up. Everytime I go to play anything on it it just shuts down my computer. So I rolled it back to the stock media player 9 and it works fine, so far atleast. Any idea why?