Changing Windows 7 Logon Screen wallpaper.

There are two ways directly to choose for changing Windows 7 log on screen changer :
i. Manual screen change.
ii. Using 3rd party software.

Manual screen changing methode:
i. Type Regedit in your start menu.
ii. Now click on HKEY_LOCAL_MACHINE and fine " OEMBackground".
iii. If you found it then double click it then change the value to 1 from 0.
iv. If you didn't found it then add new DWORD value and name it OEMBackground and change its value to      1 from 0.
vi. Now go to C://windows/system32/oobe/ and create a folder and name it info. 
vii. Now copy the desired image which is less than 245kb to this folder and name it defaultbackground.jpg.
viii. All done.


Using 3rd party software:
I recommend you this methode because it is easy and very effective.

i. Download Windows 7 logon background changer from here. Download it with your social site id.
ii. Now open it from start menu or from its installation directory.
iii. Browse for your desired image or choose from default custom image. You can choose images of any size.
iv. All done.

NOTE: THIS SOFTWARE MAY NOT WORK IN WINDOWS 7 PROFESSIONAL.