More problems with ProSavage

I was in this forum awhile ago when I was trying to attempt to disable my onboard ProSavage and install a new one but after awhile I just could not get it to work no matter what I did (am assuming it's my PSU) so I just returned the card and stopped trying to play EQ or Sims 2.

Anyway now I have a new and exciting problem with ProSavage. It was allowing me to play Lineage 2 for a full week with no problems. It lagged a bit and didnt look as good as it should have (but it still looked damn good) but then suddenly out of nowhere the game disconnected, claimed there was a problem with Game Guard (some kind of security program within the game) and then everytime after that, when I tried to load the game I'd get the blue screen of death and a critical error that says there's a problem with the "S3GNB.DLL" (one of my onboard card driver files).

So I'm wondering what I should do. The blue screen says I should uninstall the file but I don't know if it's possible to uninstall one particular driver file so I'd have to install the whole set, wouldn't I? I should really remember how I did this from before when I was screwing around with everything but unfortunatley I do not because I am quite absent minded and stupid. And I am paranoid that if I uninstall all of the drivers I won't get a video feed at all.

Does anyone have any suggestions as to what I should do?