The process in this post is not relevant for Windows Vista or Windows 7. For Windows Vista or Windows 7, boot from the installation DVD and perform a repair. The repair process can perform a system restore.I recently had an unbootable computer that complained about registry corruption on startup. I attempted a last known good for recovery but it didn't work. Which makes sense because last known good works within the registry rather than replacing registry files. A system restore on the other hand replaces the registry files, unfortunately I couldn't get the system bootable to the point of performing a System Restore.
Here is how I replaced the registry files manually:
- Boot the computer from a bootable DVD such as WindowsPE or Ultimate Boot CD 4 Windows.
- Browse to C:\Windows\System32\Config and rename:
- DEFAULT
- SAM
- SECURITY
- SOFTWARE
- SYSTEM
- Change security on C:\System Volume Information to allow Administrator access
- Browse to C:\System Volume Information\_restore{xxxxx}\RPxxx\Snapshot (choose the RPxxx folder based on time of creation)
- Copy the following files to C:\Windows\System32\Config and rename to match step 2.
- _REGISTRY_USER_.DEFAULT
- _REGISTRY_MACHINE_SAM
- _REGISTRY_MACHINE_SECURITY
- _REGISTRY_MACHINE_SOFTWARE
- _REGISTRY_MACHINE_SYSTEM
- Reboot and good to go.
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