I have a 6600gt. I turned my computer on yesterday morning, and the screen resolution was set to 640x480 with 4 bit colour, and it would not let me change it in display options. It also seemed that the nvidia drivers had disappeared, I had no icon in the system tray.
I checked program files and all the drivers which I expected to be in Program Files/Nvidia were all just in Program Files, in no real folder structure.
So I installed the drivers again, rebooted, managed to get normal res/colour, but the nvidia icon was still not in the system tray, and it seemed there was no trace of the drivers on my system. When I rebooted, I got straight back to 640x480 with 4 bit colour.
So I tried using driver cleaner, and reinstalled the drivers, and got exactly the same situation as above. As soon as I reboot with nvidia drivers installed, I get 4 bit colour.
So next I tried going into device manager, and uninstalling display drivers from there. This was kind of stupid, because when I rebooted, windows would not start and it just got caught in a restarting loop, even in safe mode.
So at this point I went and backed up what I could on downstairs PC, and then "repaired" my windows installation. Once I was back at desktop, I got the same old problem as soon as I tried to install nvidia drivers.
I am now at a loss at what to do, I cannot even start counterstrike, or im sure any other game. I am stuck 50:50 as to whether it is hardware problems or a software problem. Is a full reformat the only way?
Anybody come across any problem like this before? I would have thought that a repair install would fix anything majorly messed up, but thinking about it I suppose a lot could still be corrupted in the install. The thing which makes me think hardware, is that it was suddenly like it when I turned my computer on yesterday morning, but fine when I shut it down the night before.
Blurt some ideas at me people...I need some help, this is driving me crazy being sat at a computer which isnt working as well as it should.