Had this card for a little under two weeks now but been having some issues with it already. I've had my computer crash in two different occasions. One was in game, the other i was just watching videos. Don't know if the card is defective, or if I'm having driver issues or what but I need help. This is with everything stock. I haven't tampered one bit yet. My drivers are all up to date. My power supply is the Corsair TX850 power supply. This is all on Windows 7. Any ideas?