halo gave me lots of multiplayer and singleplayer funn.

halo2 was just an slap in the face, old game presented as new and improved, its old and crappy, yes is better than the xbox version, but is a mediocre game, compare to any half decent fps on the pc, and not even close to a good pc shooter

hello there, if you ran the demo you should be able to run the full game, post your system specs, i guess you already try all this but here it goes.

update all your system drivers, make sure in case yuo have an ati, or nvidia card, to unistall them in control panel then reboot into safe mode and use a driver cleaner utility http://downloads.guru3d.com/download.php?det=1655

then install your new drivers, also make sure you have the lastest dx files

http://www.microsoft.com/downloads/details.aspx?familyid=2DA43D38-DB71-4C1B-BC6A-9B6652CD92A3&displaylang=en

gl man