Error: Registry is damaged (due to SYSTEM.DAT/USER.DAT corrupt).

Error:


Registry is damaged.

Cause:


The SYSTEM.DAT and/or USER.DAT files are damaged. Windows automatically makes a backup of these files with a .DA0 extension.

Solution:


Click 'Restore' when prompted. Windows automatically renames the backup versions of System.dat and User.dat, and reboots.