Hide user names while logging in to Windows(Windows 7)

               Windows shows all the user accounts on the welcome screen and in this way gives away the names of the users even to unknown and curious third parties. You want to prevent that from happening.

               In order to prevent unauthorized persons from having to guess just your password, click on ‘Start’ and type ‘regedit’ under ‘Programs’. Windows shows the results of the search directly in the Start menu. Double click under ‘Programs’ on ‘regedit.exe’ to start the registration editor. If you are working under an account without the administrator rights, you will have to first get them. For this, click with the right mouse button on ‘regedit.exe’ and in the context menu select ‘Run as administrator’.
               Navigate in the tree structure on the left side of the application to the key ‘HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System’. Now, on the right side, you will find the value ‘dontdisplaylastusername’ among others. Open this with a double click for editing and in the following dialogue box set its ‘Value’ to ‘1’. Confirm this entry with ‘OK’.
               From now on, you will have to enter the name for the user account in addition to the password on the welcome screen. In this way, you make it harder for unauthorized users to start your system since they would need to know or guess the name of the user account also besides the password.