You can see if it works in Safe Mode - just note that you won't have the option to undo the restore like you do in normal mode:

http://bertk.mvps.org/html/safemode.html

If it works in safe mode, then something running in normal is intefering, possibly an antivirus program (Norton is one that's known to block system restore).    If it worked before and doesn't work now, then something is different - but tracking it down could be a real slog.

Thanks, it workes in safe mode. I will try changing my antivirus. If it dont work then I will repost .

I appreciate your help, Thanks

Just in case:  If you mean changing to a different antivirus program,  that probably isn't necessary (unless you want to) - disabling it temporarily just to run system restore might be enough.

The link below shows instructions for disabling Norton so the system restore will work -  other programs may have similar instructions on their own sites.   Just be careful - no running around on the web with your antivirus turned off.

http://service1.symantec.com/SUPPORT/sharedtech.nsf/pfdocs/2005113009323013

Thanks for your help. It was either Zone Alarm Firewall or Avira Free Edition AV. I replaced them with Comodo Security & all is well.

Regards, doubleg