I have a Window 7 computer that is a part of a small office work group. The user wanted to change their login name, so I made this change via Control Panel > Administrative Tools > Computer Management > Local Users and Groups by right clicking on the account and selecting the "rename" option. I had a suspicion that I would likely have to manually change the user's home folder, but instead it seems to have completely borked the entire system. The worst thing is that the Administrative account seems to be completely frozen by the change. Attempting to access any administrative type utilities seems to freeze the system. Indeed, the entire start menu appears to freeze up when I log in as the administrator. Trying to open the restore point utility doesn't work either (even in safe mode). I have no idea where to even begin trying to fix this. Any suggestions?