Which driver did you install? Have you tried running in compatibility mode? I would suggest trying the compatibility mode first and if you have no luck with that than search for the latest Windows Vista driver and install that.. (if you haven't already done so of course.. ) Is this the only problem your having as far as drivers go? There have been a few others on this forum having problems with these cards too.. Search around a bit too and you may find a better solution than I've suggested. I don't use these cards so I don't know the ins and outs of them, unfortunately..