display driver killed graphics card?!

[bp7]

Hi well my computer originally had Nvidia GeForce 8400m gt graphics graphics display. I downloaded a driver in order to play a game(which never wound up working but thats not the point) anyway Whenever my computer came on it would always give my comp specs and i would say Nvidia GeForce 8400m gt. Once I downloaded the driver however it just says standard vga graphics adapter. My screensaver doesnt work anymore, it says something about how my comp cant support direct3d something or other. And i can't watch my dvd's because it says " your dispay environment does not support protected content playback," which is a problem I never hd before. Anyway I deleted the whole folder that the driver was in, because I couldn't find a way to uninstall it. How do I get back to my old graphics???:curse:

[Miz]

Did you download the drivers from Nvidia (http://www.nvidia.com/content/drivers/drivers.asp) for the "GeForce 8 Series"? If so, are you sure you downloaded the correct drivers for whichever Vista you have (32 or 64 bit)?