Win8 can not display the wallpaper after changing the lock screen wallpaper.

There is a Win8 user report, after modifying the lock screen wallpaper in the computer settings, the lock screen interface preview in the settings can correctly display the modified wallpaper, but After pressing Windows+L to lock the computer, it displays a lock screen wallpaper that was previously set. What should I do?
Recommended: Win8.1 Professional Edition Download

Method One:

1) Log in to the system with your Microsoft account first;

2) Control Panel User management there to create a new account, named "“test" as an example, and set to administrator;

3) log out of the current Microsoft users, and log in with test, you will find that you can change the lock screen Wallpaper;

4) User Management to delete your original Microsoft account, including user data;

5) Create a new user account, your Microsoft account, and set it as administrator ;

6) Log out of the test and log in with the Microsoft account. After the settings are completed, you should find that you can change the lock screen wallpaper.

7) Delete the test account

In short, I just want to find a way to delete the Microsoft account and rebuild it.

Method 2:

Please temporarily turn off “slide show on the lock screen  test again if the problem exists, and confirm if the slide show folder set is These pictures exist.

If the problem persists, please temporarily turn off the post-synchronization test of OneDrive (formerly known as “SkyDrive”).

If the above two methods fail to solve the problem, then you can choose to keep the user files and restore the Win8 system to solve this problem.