Swifty, I am currently having this issue. Mine is a Raedon 9 270x. It isn't the cable because I am currently plugged into the HDMI port on my motherboard. My monitor is indeed a TV. I have not done any driver updates, could that actually effect it? I was playing with it in a while ago (About 45 minutes) and it just stopped after a reboot. Please please reply. Thank you in advance!