Recently I've been having some troubles playing Guild Wars, it start with occasional 1-2 second blackouts, then another time the game crash and gave me a display driver error message, today it went too far ^_^ I got the usual 1 second blackout and then when the screen came up again all the pixels were flashing and messing up the screen, screenshot below.. What's causing this? How can I stop this? Additional info: Using an NVidia GeForce 8600 GT graphics card, 2 months old or so. Running Windows Vista I can play Crysis on medium spec without any problems. Also an unusual sound comes from the graphics card, only while guild wars is running, no smell of burning, graphics card is only warm.