change the bored background login display in your windows7 machines. its a simple trick which is being performed using the registry of the system.

Steps to Change Windows 7 Build in Logon Background Image 

 1. press win+r key and Type Regedit at run command

2. Locate following registry key

HKLM\Software\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background

3. Now in right-side pane of the registry, change value of OEMBackground to 1.

4. Now place your custom image in %windir%\system32\oobe

5. Create a new folder info and background within newly created info folder
Folder path should look like this %windir%\System32\oobe\info\backgrounds

6. Now place your desired logon wallpaper within this background folder with file name as backgroundDefault.jpg
Images Name with resolutions
backgroundDefault.jpg
background768×1280.jpg (0.6)
background900×1440.jpg (0.625)
background960×1280.jpg (0.75)
background1024×1280.jpg (0.8)
background1280×1024.jpg (1.25)
background1024×768.jpg (1.33-)
background1280×960.jpg (1.33-)
background1600×1200.jpg (1.33-)
background1440×900.jpg (1.6)
background1920×1200.jpg (1.6)
background1280×768.jpg (1.66-)
background1360×768.jpg (1.770833-)

Please NOTE: Images must be less than 256kb in size
The backgroundDefault.jpg image is loaded and stretched-to-fit when a resolution/ratio specific background cannot be found.

have your favourite image and enjoy every time on ur login..

sure post a comment..