The display was a blue screen with a fake warning that some horrid trojan had infected my computer... blah, blah.... I opened my personal image files and rightclicked to set a background image, and nothing happened so I righclicked on the desktop to pull up the Display Properties window. That also was damaged, and only two of the trhee tabs appeared-- "Screensaver" and "Settings"
So I looked through other posts, found a similar problem on Windows XP, followed the fix for resetting the display using regfiles posted by Kat. It worked partially--the third tab reappeared, "Desktop" but "Background:" window and scrollbar and the button "Apply" were grayed out. Scrollbar was frozen, and clicking on background types didn't work. I still couldn't load a new background by rightclicking an image.
I tried reloading drivers for my 32MB NVIDIA GeForce2MX with TV out (Dell) from the disk, but that did not fix the problem.
What do I do now?