I just did a clean install of Windows7 from Vista. I have to video cards. the main one is an nvidia 8800 GTS. the second is an nvidia 7200gs. After the install and the first restart I get a blue screen. When I remove the 7200 the install works fine and the computer runs fine. If I then try to put the card back in the computer blues screens again on restart.I got the latest driver
from nvidia (191.07) but still no good. I tried installing both 32bit and 64 bit versions of Windows 7 and got same results.