I go to play a game and the first time i load any game its fine, in this instance lets say oblivion. I play it fine then take a break. Go back to play and and get to the menu screen where the computer freezes and the sound starts to studder/loop. If i leave it on this screen the words will then become illegible(these are artifacts i guess?) This happens everytime I either leave the game and come back to play again or alt tab. Ive tried Rivatuner but honestly i dont think its the temperature as it happens when I just start to put a load on the card. Any help is much appreciated.