A system image
is an exact copy of all system disks which can be used to restore your PC to the state it was in at the time the image was made. By default, a system image only includes the drives that Windows requires to run, including Windows 10 itself, your system settings, programs, and files. You may also include any other drive in the image if you wish. When you restore your computer from a system image it is a complete restoration, you cannot choose individual items to restore and all of your current programs, system settings, and files are replaced with the contents of the system image.
This tutorial will show you how to create a system image
backup in Windows 10
to be able to use to restore the contents of your computer back to the state it was in when the system image was created if your hard drive fails or your computer ever encounters problems.