If you try to rename the default login screen image p, the following error message will stop you continue to change the screen background.
Of course you have o confirm this operation too.
We will not continue to find a way to change this protected background image.
For now just try to use smaller images.You require permission from TrustedInstaller to make changes to this file.You can find the oobe folder.It works with Windows 7 Home Basic, Home Premium, Professional, Ultimate, Enterprise and Starter, in x86 or x64 (32 or 64 bits).But let's summarize the steps for changing logon screen for its background for whom wishes to change Windows 7 as their likes.Now after changing the LogonUI and oembackground, we are finished with the Win7 registry.Select an image which is less best gift giving blogs then 256 KB as your new Windows 7 logon screen background.IT departments of enterprise companies will love to set Windows 7 logon screen as reflecting their missions, targets, etc.Simply click on the Start button then select Lock command for instance.Windows 7 registry and, system32 oobe folder contents.Windows 7 logon wallpaper without using a logon changer.
I must say that I loved the new logon background which is prepared by Microsoft for Windows.
Here is my new Windows 7 logon wallpaper, Star Trek background image which I could change shutdown background without using Windows 7 logon changer tools.
If there is already an oembackground dword entry within the Windows 7 Background registry key, set the value of oembackground dword entry.
You can also prevent users from being able to change the logon screen wallpaper if you don't want them to be able to modify it without administrator rights (option available by clicking on the "Settings" button).To apply a Windows theme will change registry settings we discussed above from 1.For example users will like to change Windows 7 logon screen.And copy and paste the background wallpaper g to the backgrounds file folder which resides in "oobeinfo".Windows users can easily change the flower because Windows 7 has a user interface for changing the logon screen user icon.Even while typing the word regedit, Windows 7 will list the regedit Registry Editor Windows 7 tool in the Programs list.We will click on the "Yes" button in order to allow the Windows Registry tool to make the required registry changes.The next step is creating a folder to store the wallpaper and background images which we will use to change shutdown background for Windows7.

On a side note, this small program is WPF based, it's a nice technical demo of Windows Presentation Foundation capabilities for those interested in WPF.
It creates a few jpeg files based on the image you want to put as wallpaper for the Windows 7 login screen, applies the appropriate cropping and sizing and saves them using the best compression quality possible.
To start, windows 7 Registry Editor, type regedit in the Windows 7 start menu search text area and press Enter.