I have an NVIDIA GeForce 7600 GT, and was experimenting with overclocking it the other day. It seemed to be working but when I booted the computer yesterday morning, it obviously was unstable.
However, in order to get it working I had to boot into safe mode, wipe all the NVidia drivers off, and then reinstall the drivers. Now, originally this computer had XP but I've upgraded to Windows 7.
However, now I cannot get my dual monitor setup to work. Either through NVidia, which will only allow me to clone the two displays, and at the lowest resolution (one is 1024x768, the other 1280x1024). If I try to do it using the Windows Control Panel, it will detect the 2nd display, but won't let me do anything with it. Can't clone it, can't extend the desktop.
I've tried downloading NView but that doesn't work either.
I've since solved this issue myself by downloading an earlier version of the drivers.