How to change the lock screen on your Windows computer by adding custom backgrounds and at-a-glance apps

You can change the lock screen on your Windows computer by customizing the background image and specifying what supplemental ...

How to change your Windows 10 login screen to display any image when your computer turns on

You can change your Windows 10 login screen through your device's Settings app, and make it display any photo you like.
Houston Chronicle

How to Change the Startup Screen in Snow Leopard on a Mac

Launch Finder. Click "Go" and select "Go to Folder." Enter "/System/Library/CoreServices" in the search box and then click "Go." Select "DefaultDesktop.jpg" and then ...
IGN

How to Change Your Stream's Background without a Green Screen

A decade ago, we were all watching let's plays on YouTube. Now, streaming is the way to watch other people play the games you love. And, when it comes to streaming, many personalities go the extra ...