hii, moley. dude i have exactly the same problem that u are havin i have the same ausus board and the same problem with the age of mythology, not running saying non accepted video card.
U said that, u got a solution but that was a lot technical 4 u, now i would like u to give me those what information u have for i m a dell technician, may be i will be able to resolve the issue and make it simpler 4 u , so that we both will be saved from buying an expensive video card, wating for reply.....
sam