If the inplace upgrade is not successful, then I'm afraid you need to perform a clean install. As I mentioned before, back up all of your important files before you start. Using the same link above, please prepare atleast an 8GB USB flash disk to create a bootable media creation tool. Then go to the link below and scroll down to "How to perform a clean install" and follow the steps using your bootable media creation tool.
Performing a clean install will re-install Windows 10, you will have to re-install your 3rd party apps and drivers.
https://www.windowscentral.com/how-do-clean-ins...
Hope this helps. Let me know how it goes.
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.