How can I create a full system backup for Windows 11 computer?

I was scared once when Windows 11 suddenly failed to boot. Fortunately, no important data was lost. Since then, I decided that I must learn to create a full system backup for Windows 11, just in case. Later, I used the "System Image Backup" that comes with Windows, which really solved my worries!

1. I typed "Control Panel" in the search box on the taskbar and found "Backup and Restore (Windows 7)". Don't be misled by the name, it is actually a built-in function of Windows 11 and it is very useful.
2. On the left side of the interface, there is an option of "Create System Image". After I clicked it, it asked me to choose the destination for the backup. I have an external 4TB hard drive with enough space, so I chose it without hesitation.
3. The system prompted me which disks to back up. I checked the C drive and the system reserved partition by default. These partitions contain the Windows system and all settings, which are the key to a complete backup.
4. After confirmation, I clicked "Start Backup" and then watched the progress bar slowly. It took about 20 minutes (depending on the amount of data) and the backup was completed. Windows also reminded me that I could create a recovery disc, but I skipped it because the system image was enough.

This backup saved my life: 
Then one day, my Windows 11 update failed, causing the system to crash and not boot at all. Fortunately, I used the system image function to create a full system backup for Windows 11 in advance, and used it to restore the system directly, and it returned to the state at the time of the backup, even the desktop icons did not change!