"%systemroot%\registration" System Restore Error?

I would like to know how to restore the computer back to a normal point. Here is the error I got, It makes no sense at all. I also had trouble using the command prompt because It would not accept my commands given to it, such as ipconfig but now its working again. I had changed the environment settings (PATH and something else with PATH in it.) But then I re-installed java and now i guess its working? But I cant restore, I accessed environment under Advanced System Settings. Again, The cmd seems to be working perfectly, but I dont want to try system restore just incase it messes something up.

I have just encountered the same problem and have not been able to get any answers either. I am running Win 7 Pro Sp1, x64 on an HP Pavilion.

All I keep seeing is you must do a reinstall. I am not buying this answer, it is a catch all answer. Someone must know of a way to repair this problem.

Another note with mine is that the System Restore disappeared from my System Tools.

Now I have just been hit with MTxfr Could not create file mapping (5).

Which slows down or sometimes even stops loading new web pages.

I believe this may have been caused by removing Java from my machine until they fix that critical flaw. See below:
How to troubleshoot script errors in Internet Explorer