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#41
Windows Backup and Restore might work and it might not.
The better tools to back up Windows include Aomei, Macrium Reflect, Acronis, etc. Macrium is the favorite on this site.
You ought to back up personal files with a tool designed for that purpose alone. Use an imaging tool to backup Windows and installed applications.
Any or all of them can fail for no apparent reason, but your personal files are likely much more important than Windows files, so take extra care for the former.