I recently bought an AMD FireproV4900 graphics card, and im running it on windows 7 64 bit with sufficient RAM and processor but everytime i open a game the just screen plays back continuous black waves and cant seem to hold an image still. I tried downloading drviers and upgraded from a DVI connection to display port-HDMI but I can't figure out what i am doing wrong. Btw im using only one monitor and its an ASUS VS247. Help please...