=== Disable logon Image ===





  HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System

In right-side pane, create new DWORD DisableLogonBackgroundImage and set its value to 1


===Disable Login Screen and enter console mode ===




  HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\TestHooks

 In right-side pane, create a new DWORD ConsoleMode and set its value to 1