Hi, I was used windows XP, I install Windows 7, When finised, I install NVIDIA graphic card driver.After that I click to rating from control pannel. When start rating system windows collopsed and gived blue screen. If you want I can give screen shot. I take photo of blue screen. Windows 7 is looking good but not ready :)
Ok, no bad feelings about NVidia. Because what i hear is that they working verry close with Mircosoft. To get ASAP there drivers compatible with the microsoft products.
So try to visit the NVidia site and try to see if there is no beter driver version.
I have the same problem too. I also installed NVidia driver. I try to rate my hardware, but when the screen flash, i got blue screen. I never got rating problem in my Windows Vista. I think both of them must try to resolve this problem. I hope the final release of Windows 7 is much more baetter than that. Microsoft still have a lot of work to do. :p
Take a peek on the Nvidia website (http://www.nvidia.com/Download/index.aspx?lang=en-us). And take a look if nvidia has no updates for your video card driver, make sure you select the windows 7 as your os in the download menu.