|Ok so what is your vague idea as to what you did wrong.?|
Did you read the warning?
Warning Do not use the procedure that is described in this article if your computer has an OEM-installed operating system. The system hive on OEM installations creates passwords and user accounts that did not exist previously. If you use the procedure that is described in this article, you may not be able to log back into the recovery console to restore the original registry hives.
All major brands of computers use OEM installation CD's for the general public.
If you followed the procedures as described from Microsoft you should have had a restore point. If you have system restore turned off then the solution would be to turn it on and then repeat the processes after you restore from a backup .
When it comes to someone messing around in the registry the first question is did you do the back up?
No one can really help you after you have edited the registry hives as we really do not know what you did or did not do.
I am not trying to be o missive just stating the facts. This is why we do not recommend that any users do any editing in the registry.
The only recourse after this type of issue is a complete registry replacement in which you will loose all your applications and programs you might try to do a second repair option using an original microsoft installation CD.
Change Is Good