I bought BF3 yesterday and after the long process of installing it with the updates I finally was able to start the game up.It was about to launch when it said my gpu drivers are outdated so I updated to AMD catalyst 12.3.After the update I started the game up and all of a sudden while the game was loading the gpu started making a loud noise and the screen went blank but I can here the game running in the background.The noise wasn't like something suddenly broke,it was the gpu fan that sped up to most probably 100%.My specs are Q8200,4gig ram,HD 6850 and a 520W vantec ion psu.What could be the problem?