I was recently uninstalling some unwanted software from my system (Kazaa and Sidefind) when the system crashed. When I rebooted I was presented with the Windows 98 installation screens asking for registration code and such (I assume the registry may have been damaged). I proceeded with the setup and had to reboot again. Now whenever I start the computer, Windows attempts to run, I get a login window for Microsoft networking, then I get an error pop up saying 'Explorer has performed an illegal operation' and can get no further. Most of the data on the hard drive is not backed up so I can't just reformat. Any suggestions on how I could salvage my dying computer?