Yeah I had Halo for PC a long time ago and played online almost everyday, but after moving twice I somehow lost my install disc. Might have to invest in another copy lol. I did a little more scouring and alot of people are having troubles with this video card and other games (Starcraft II for example). Do you reckon it would be worth contacting Dell (Or Nvidia) and trying to find a reason why its not running, or if they have a workaround?