The first good news is that the upgrade from Windows 8 (which I hated with a passion) to Windows 10 went very smoothly. Now the PC on Windows 8 is my daughter’s PC and it had few applications. In fact the only problem I had was with a DVD player, which was quickly solved by downloading a new version of the player.
The second good news is that a “simple” upgrade from Windows 7 to Windows 10 went well also. I had to delete Chrome and OpenOffice, and then reinstall their Windows 10 versions.
The upgrades were slow, even with a good cable modem, but it all worked. I was delighted that the upgrades restarted themselves intelligently each time when the network burped.