I recommend you to completely repair Windows before you have to make a copy of your personal files
Microsoft Official Website to download and create Windows 10:
https://www.microsoft.com/en-us/software-downlo...
See here the correct way to recover your files when repairing Windows:
https://www.tenforums.com/tutorials/16397-repai...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.