posted on Dec, 23 2007 @ 10:50 AM
This is sadly a common occurance with Nvidia video cards.
Here is the steps to resolve your issues:
1)Download the latest vista-Ati video driver:
2)redownload direct x for vista-when you uninstall vid drivers, you almost always end up uninstalling direct x 9C:
3)direct x 10-I personally recomend you do NOT!!!!!use direct x 10-it uses MUCH more processing power:
4)Go to Device manager-with your Nvidia card in- and right-click the vidcard.
5)Pick the 3rd option down-or so- which is "uninstall"
6)you will get a warning about disabling the card-choose "yes"
7)Now, do a complete shutdown of the computer-"NOT A RESTART"
8)now take out your Nvidia vid card and install your ATI vid card.
9)start the computer and when promted for driver for new equipment-click close-really!
10)Now, double-click your Ati driver and install it-yes you will need to reboot when it is done.
11)Now, instsll direct x.....yes you will need to reboot again............
12)now you should be able to set your resolution and other features.
I hope this helps, if you still have further issues, feel free to u2u me with all the exact details ofd what you did and what the results were.
[edit on 12/23/2007 by mrmonsoon]