There is no need of installing extra third party software to Change Windows Logon background. You can easily change the background by just following this article.
Click Start menu. Type “regedit” (without quotes); the program will appear on the top of the list; right click over it, select “Run as admin…”; it may give security prompt, accept it:
Go to this location:
HKEY_LOCAL_MACHINE > SOFTWARE >Microsoft > Windows > CurrentVersion > Authentication > LogonUI > Background
(Showing you in two screenshots below):
Right click on the right sided pane, and create a new DWORD and name it OEMBackground:
We are using 64 bit system, so, we are getting two option for DWORD. we will select the 64 bit Value.
Double click over it and change the Value from 0 (zero) to 1:
Open the following location:
you will see here:
If you select (like we have done), you will see the properties below, of this default background image:
All you have to to is:
1. Create a subfolder inside oobe subfolder; name it “info”, inside it create another subfolder, name it “Backgrounds”.
2. Images must be of 24-bit and not larger than 256kb in bitmap format.
3. Default Image must be named: “BackgroundDefault.jpg”
4. It must be of the same resolution that of your monitor. (For me, its 1024×768).
If you want to save resolution dependent versions of your image you can name them like this:
Reboot, you are done!
If you can not get or create all the above mentioned resolutions:
Use any wallpaper or image of your choice, but always use the correct resolution, i.e. that of your monitor.