Many users like to change the lock screen wallpaper for their computers, but some Windows 7 customers reported that the lock screen wallpaper cannot be changed. What should I do in this case? You first open the Easy Browsing Center, then find Browse All Settings, and click Make the computer easier to view, and then uncheck "Delete background images" should be enough. If the switch fails, you can try creating a new DWORD value using the Registry Editor.
Solution for Windows 7 unable to change lock screen wallpaper:
Enter the desktop and enter "Easy Browsing Center" in the start input box at the lower left of the desktop.
Go to the Browse All Settings operation panel, find "Browse All Settings" and click "Make the computer easier to query".
Check whether the "Delete background image" option is checked. If so, remove it and click OK at the bottom.
#After completing the above operations, try changing the desktop background again, if the problem persists. Try the second method: use the key combination "Win R" to open the run command box. Type regedit.exe and press Enter.
Open the Registry Editor and navigate to the following registry keys: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies to find the ActiveDesktop key. If you can't find it, right-click, select "Policies", then select "New -" Item" and name it ActiveDesktop
for ActiveDesktop, on the right Right-click the mouse in the details window, select "New->DWORD Value", name it NoChangingWallPaper. Set the value for the new value NoChangingWallPaper. 1 means blocking changes, 0 means allowing changes. Here, set its value to 0 and finally click "OK". Restart the computer.
#The above is the solution to the problem that the desktop wallpaper cannot be changed in win7.
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