How to Change the Logon Screen in Windows 7

  1. Go to registry editor by typing 'regedit' on start menu.
  2. In the Registry Editor goto Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background
  3. Change the value of DWORD OEMBackground from 0 to 1
  4. Now goto to the folder %windir%\System32\oobe
  5. Make a folder info
  6. Inside info make another folder backgrounds.
  7. Change the name of your picture as backgroundDefault.jpg and place it in backgrounds folder (image size < 245KB).
  8. Restart