How to change logon screen in windows 7

How to change the logon screen wallpaper without any software

step 1: go to the searching box and type regedit.exe 

and open regedit.exe this will show like below

step 2: now go to the path given below
         HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background 

step 3: open OEMBackground

 and change the value from 0 to 1 and then click on OK

step 4: go inside that disk in which you install windows file
        
and go to the path 
        
C:\Windows\System32\oobe

step 5: now create a new folder an give it to name 'info'

        
then go inside the folder info and then make a new folder and 

give it to name 'backgrounds'

step 6: go inside the folder "backgrounds" and paste the image

 which one you want to show on your logon screen

and change the image name to "backgroundDefault"

* make sure your image size must be less then "256kb"

step 7: now restart your PC and you will see changed logon screen

like below

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