Windows 7 logon background hack

This is common knowledge, yet strangely every time I rebuild my work PC (which is too often! Gah!) I try and Google the location of Registry keys and folders and always, always get a bum-steer. So here, have another (bum-steer?) version of this hack on the Net.

  • Registry key to hack: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\ CurrentVersion\Authentication\LogonUI\ Background
    (you can stick this in a .reg file and Import from regedit.exe):


  • Directory to place your background image:


Call the image “backgroundDefault.jpg

  • The image must be JPEG format, and total size < 256KiB
  • You can test straight away with Ctl+Alt+Del — no need to reboot or logoff.