How to remove LightsOut Restore manually

Problem

When LightsOut Restore fails to be removed, you can perform a manual removal by following steps.

Note: The manual removal should only be performed when LightsOut Restore fails to be removed from Tasks -> Remove LightsOut Restore on System Recovery console.

Error Message

Exception Processing Message 0xc0000013 - Unexpected parameters

Cause

The automatic uninstallation for LightsOut Restore may fail due to various reasons like permissions issues, installer issues, and so on.

Solution

1. Make sure that a recent full backup of the system has been created.

2. Open a command prompt as an administrator and run the below command to export the contents of the system store into a file. 

   BCDEDIT /export <file name>
 
3. Run BCDEDIT /v command and find an description entry for "LightsOut Restore" in Windows Boot Loader. Take a memo for GUID of the identifier.

4. Run below command to delete LightsOut Restore's identifier.

   BCDEDIT /DELTE <identifier GUID>

   For example:
   bcdedit /delete {948d6f75-6caa-4b47-99ea-2a9397285dd7}
 
5. Open File Explorer and delete C:\SRD folder.
   Note: C:\SRD is a hidden folder.
 
6. Run regedit.exe.
 
7. Delete the below registry key.

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Veritas Recovery Toolkit
 
8. Reboot, and check if Windows Boot menu does not appear.