I have been having this driver problem with my 7800GS and I tried every possible driver and none worked... All I could start up in was VGA drivers and the card was brand new and the Mobo was also new. Doesn't matter now though cause I am having worse problems... my AGP slot is like starting to melt when I run for over 4 or 5 minutes, but everytime I restart it comes up as if the Mobo is fine... I have a big long post about it, but if you solve this problem I would like to know because whenever I get it running again I will have to deal with this problem again. I sincerely wish you good luck.
Link to my post: http://www.techist.com/showthread.ph...hreadid=106089
If you have any knowledge of faulty AGP slots plz take a look, I am assuming I am doomed to just replace the Mobo, but what the heck right?