I just got a new video card couple of days ago.Ati Radeon HD 3450.I played halo and halo ce two days ago too see if it works i raised resolution to make it look better and it did.And now today i try to enter the game and both games dont work.I get black screen sound is normal and everything else works but i cant see anything.I select run in 640x480 in icon options game starts but 1 second after it starts i get exceptions error.So PLEASE help me.I didnt change anything to the game other then resolution.I instaled all drivers needed for the video card.

I did it.Halo combat evolved doesnt want to start i just get the halo screen for 2 min and then it returns to desktop and no error.Halo custom edition works but i cant see chat ingame.

change your screen resolution, ingame for halo ce to fix the chat problem...

If you ment changing the resolution to be the same as my desktop resolution.I did that still the same thing.As for Halo combat evolved i cant run it no matter what i do i change a lot of stuff but the game doesnt start at all.And if i try to change resolution in Halo custom edition it works some times but some times game just frezes and i have to reset computer.

I hav only 1 suggestion:

RE-FORMAT