Windows 7 Auto Login box missing

Problem:
The box "User must enter a user name and password to use this computer." is missing.

Fix:
"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\AutoAdminLogon value in the registry. Mine was set to 0 so it did not show. I set it to 1, and now it shows.
Once it showed up, it was already unchecked, and when I hit OK it did not ask me for a username and password. I then checked it, hit OK, then opened it again and unchecked it, and hit OK. The dialog for me to enter the username and password then appeared and worked as documented in this post."