To change the background for the Windows 8 lock screen you should go to the Windows 8 Start Screen and type customize lock. When the search results appear click on the Settings category as shown below ...

Windows 10 offers multiple ways to personalize your PC using a photo of your own choosing. You can use a picture for the desktop background, the lock screen, or the sign-in screen. But one gotcha when ...

You can change the lock screen of your Mac by changing the desktop's background image. You can also change a Mac's lock screen image by replacing the "lockscreen.png" file in the "Desktop Pictures" ...