Note: Removing necessary registry entries might cause inconsistency so backup registry before doing changes. •1. Uninstall the existing SQL Server and all the components from the add remove program. •2. Backup the registry . Please read in details the MS link before proceeding. •3. Delete the following keys using regedit: ?–HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server ?–HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer •4. […]