I have had no problems running the game. I run raevwd and was seeing black on bluids so I was told to disable bloom lighting. I use meium setting. Left that alone and enabled hdr now game crahes can I use hdr any help would be appreciated thanks

Turning on HDR causes crashes for some setups. I do not know that there is a real workaround for it either. If you have AA enabled, you should try turning that off though.

do I turn off anti aliasing in my ati cat area or in the game I read that oblvion doesn't like anti aliasing ?

Turn of the in-game AA.

thanks I have been turn hdr in the beginning before the game start I try putting it back tio bloom and start the game and turn off aa and also turn on hdr to see if it help with black buildings