I had an ATI artifact leftover so I deleted the Display Adapter through Device Manager. I booted up in Safe Mode and re-installed the Display Adapter. It worked...once. Since then I can't see anything except the Millenium startup screen. The machine seems to be loading up fine, I just don't see anything. It also locks up if I try to start it up in Safe Mode. Any ideas on what to do now?
I'd try running Windows Setup and reinstalling the OS over the top of itself in the same partition, and hopefully, this should repair any corrupted files and put back the standard display adapter, or at least allow you to install one without causing an error. But afterwards, you'll have to reinstall the hotfixes from Windows Update.
Note: It may also become necessary to edit the system.ini, win.ini, config.sys and the autoexec.bat files from DOS with the EDIT command if the reinstallation doesn't fix the problem. You'd need to start the system with a Win9x <A HREF="http://www.mirrors.org/archived_software/www.bootdisk.c..." target="_new">boot disk</A> to acomplish this.
It's also possible that you might be able to reach the desktop again by running this command at the DOS prompt, which will give you an option to restore a previous Registry:
c:\Windows\Command\scanreg /restore and press Enter. Select the previous registry you want to restore, then press Enter. A properly working registry has the word Started next to the date.
No promises, though ... I haven't seen WinME in years. Incidents such as this with WinME are exactly why I stayed with Win98SE until moving onward to Win2K and WinXP. For example, WinME is the only OS I've used that cannot reinstall non-Plug & Play components without a complete reinstallation, even if the items are selected in the GUI, and the driver location is manually accessed.