Rollback.exe is a tool designed to help computer manufactures preinstall Windows NT 4.0 and to allow end-users to perform final configuration.

However, if you run this tool, it will restore the registry to the pre-GUI phase of setup, effectively destroying your installaion.

The only way to fix a system that you ran Rollback.exe on is perform a restore from a backup.

Your ERD won't work, nor will tip 0505, as the setup.log and some registry components have been removed.