In one of your responses you stated the following, "After a repair install, I
find that system restore feature works only in safe mode and not regular mode."
If system restore works in safe mode, but not in normal mode, it usually
indicates that some program or process running in normal mode is the source of
the problem. It's doubtful that reinstalling System Restore would be the cure.
As I suggested in my earlier response, the first place to look is the security
programs installed on your computer. Antivirus programs such as Norton Antivirus
and avast! can cause System Restore to not work properly in normal mode. When
the computer is booted into safe mode, System Restore works correctly because
the AV programs aren't running.
With that in mind, you might want to pass along information concerning what
security programs are running on your computer. Also, try to expand on what
happens when you run System Restore in normal mode. Include any error messages
that System Restore reports.
Nepatsfan