1. You will need to be able to view hidden files, so go to Start>> Control Panel>> Folder Options>> View tab. Under Advanced settings, place a checkmark in: "Show hidden files and folders". Then uncheck: "Hide extensions for known file types". Click Apply, then OK to exit.
2. Open Windows Explorer, then go to Windows>> inf folder. Open the inf folder and find a file named:
sr.inf
Right click this file and select "Install" from the resulting menu.
Note: This procedure will delete all restore points from your old installation and recreate a fresh installation of System Restore.