If you can boot into Windows then you may be able to perform an in place upgrade repair. 
This method allows files, drivers, and applications to be saved. 
 -repair-install-windows-10-place-upgrade.html
If you can boot into Windows then you may be able to perform an in place upgrade repair. 
This method allows files, drivers, and applications to be saved. 
 -repair-install-windows-10-place-upgrade.html