Went bad? Its fresh out of the box! :P Problem is, its a work computer.. and it works just fine when im NOT playing.. cant tell them i want a new one because i want to.. play.. :P Sure thats it?
Could happen with a new one. Power supply good enough to run the card? Case has enough airflow for the card?
Only way to see if it's the card or the computer/Windows is to try the card in another computer that has the proper specs to run that card. If the issue follows the card, bad card.