I am having a problem changing the color depth and resolution on a dell dimension 2400 with the Intel 82845G/GL/GE/PE/GV Graphics Controller. I have had this problem in the past and ended up reformatting and reinstalling windows to correct the problem after trying numerous driver uninstalls/installs. This issue seems to occur somewhat out of the blue, I do not see any errors or warnings related to this problem in the event logs. However, I suspect that it relates to a Windows update that is being installed automatically. Suspecting this, I went in and tried to use the system restore feature but it would never complete successfully (go figure), I then tried uninstalling all of the latest windows updates that were applied to the machine but did not have any luck their either. I do not wish to reformat and reinstall windows again to fix a problem that will most reoccur and that should be able to be remedied much more quickly.