So i have been having this odd issue, as i am playing guild wars 2 my game will flash black, but i can still move and act, and then it recovers as if nothing happened. it does this at random times and if i have been playing guild wars 2 it will still affect the computer even if i am no longer playing the game. i have checked temps and such and even been working with gw2 tech support but still nothing. so i thought i would ask here. please help.