Since the LCD monitor is acting up, I hooked the computer up to our tv which is a Samsung - PN51D450. The computer runs fine on it and the screen looks good, my only problem is I can not play games on it. I have tried to launch COD 4, Black Ops, to no avail. How can I make it to where these games will work... The tv is hooked up to the video card via HDMI Cable.