Rafael Rivera has done it again. Few months ago he found a way to unlock hidden features in Windows 7 pre-beta builds. Now he has uncovered an extremely simple technique to change Windows 7 Logon Screen background. Previous versions of Windows provided no easy way to modify the LongonUI. Users had to resort to 3rd party softwares like Logon Studio.
Microsoft still doesn’t provide a direct way to alter the LogonUI, but with a little bit of work you can set any wallpaper of your choice as the background in the recently leaked Windows 7 build 7057. This is what you need to do.
Fire up the Registry Editor by typing “regedit”
Browse to HKLM\Software\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background. Locate the DWORD value called ‘OEMBackground’ and set its value to 1. If this value doesn’t exist by default create it (Edit–>New–>DWORD (32-bit) Value).
Now browse to %windir%\system32\oobe\info\backgrounds. Again this may not exist by default. In that case create the folder manually.
Select a wallpaper that matches your monitor resolution. The wallpaper must be in jpeg format and must be less than 256 KB in size. The following image names are supported –
backgroundDefault.jpg will be loaded and streched-to-fit when ratio specific image can’t be found. If the background image can’t be loaded the default SKU-based image will be displayed.