Oblivion problems

I recently put oblivion and the expansion and I patched it to the most recent version.

I also updated my video drivers and got rid of the settings files for oblivion.

The game still says my card is unrecognized, I went to the compatibility tab on the game ran it as a admin and in windows xp sp3 mode (wich it worked fine in when I had that os)

But before I messed with that the game would crash when it gets to the first loading screen. Now it crashes when I try to load a character....

Any ideas???

Oh I have a nvidia 8800gts.

What exactly do you mean when you say that you got rid of the settings?
You mean the my games folder?

Now why would you get rid of the settings files?