This is driving me crazy. All of a sudden, often when I boot into windows the graphics is set to 4bit color and 800x600. When I check the display properties is says "Default monitor on" In the device manager the GF3 card says "is unable to start - Code 10" From there it can be time consuming to get it back to normal. Some times the "roll back driver" works, sometimes uninstalling the GF3 through device manager and reinstalling works. This is so weird, it just looses the card out of the blue sometimes.
 
I've tried Nvidia Detonators 23.11 and 21.85 but the same thing happens. Maybe every 5th reboot result in the same 4bit color - graphiccard and monitor gone thingy.
 
Some more info:
Abit KT7A-R w 300W PS
KT7A bios ZT (bios set to primary display - AGP)
4 HDD through HPT370 controller
Leadtek GF3 TD
Nvidia 23.11 (currently 21.85)
Default winXP dx8.1 drivers
Nvidia Refreshrate fix put to monitor maximum supported.
VIA 4-1 4.37a
 
This has been going on for about a week now, never happened before.
 
Thanks for any tips.