any suggestions?
1 shut down your pc
2 open tower
3 indentify your ati card
4 with a screw driver remove card ( dont bother about damaging it )
5 place card in corner and procede to stamp, kick, piss on, pour kerosine and burn it
6 find a nvidia card and always keep in mind never by the ATI hype or listen to their fanboys.
actually halo was buggy to begin with. when released even the best beast had a bit of trouble with it. so i doubt even changin will help but it will give you peace a mind. take this from a former Ati user.