Having used my Dell M1730 laptop for a year with great results, I installed the Windows Updates suggested by Microsoft. When I came to reboot, howver, the nVidia graphics drivers for the 8800m GTX cards had been stopped by the system because of a reported problem (Code 43). I didn't initially link this due to the updates, and assumed the system had a problem that would be easily resolved.
I tried enabling the drivers, but then noticed nVidia Control Panel was missing from Programs and Control Panel. I tried reinstalling drivers, updating to the most recent versions... nothing. I tried Driver Cleaner... nothing. It was telling me the two cards were there, and that the driver was installed, but it could not start it.
Anyway, I tried a clean installation of windows from the Dell Recovery Partition, as it was time for a clean out anyway. The problem was still there. I then reinstalled a backup I'd done two months ago, and all was fixed. It was not until I decded to update my system again, that the problem came back. I now know what is causing it - Windows Update - but I do not know which one? I installed 10, mostly definitions and the malicious software removal tool (May 2009).
Has anybody any suggestions or experience with this problem? I bought this machine for its 3D and 2D power, and it cost me £2500! Its now 3 weeks out of warranty period - typical!