HelpMePlease

I forgot to back up my registry and now none of my .lnk files will open. I tried to use the system restore feather on my Windows Xp sp2 system and it will only open a white blank background. This all started right after I used the CCleaner registry cleaner and noticed that it had found over 4000 supposed registry errors. Then I hit the fix all error button and sent my computer to hell. Please help me!!!