System Restore Stopped working?

Ever since I installed a registry booster program and ran a scan, System
Restore no longer functions. After a lengthy time it quits and notifies that
no changes were made and to try a different restore point. No other restore
point works.
What next?

You have to turn System Restore off briefly which will clear the cache and
erase all previous restore points. Go to Control Panel-System=System
Protection and then clear the system restore cache. Then restart and the
System restore will be operable. Create a new restore point and test.
Bob Hankins