My Windows 98 machine has a "Invalid Page Fault" when Explorer.exe loads on boot up. As a result I cannot use the system. I have attempted to reinstall Windows over itself and get an message that the disk in compressed and Windows cannot be installed. I am hoping I can fix this without formmating the drive and losing all my programs and data. I have a back up of all my data but don't want to go that route unless I have no choice. I did not compress my drive and it is formatted Fat32. Here's hoping.