I cannot see Administrator in Windows Login Screen

When we boot Windows Operating System .In login or Welcome Screen Administrator account or user name is not Appearing  then we must change or add a new value in registry editor
.
following steps should be done.

1.  goto Start --- Run ----regedit.

2.  goto key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList

3. Create a Dword name Administrator an give a value 1 by double clicking on it