One PC runs Win 7, no problems. The other PC auto-upgraded to Win 10 several months ago. From time to time that Win 10 PC drops the dongle and I have to go over there (15 miles) to sort it out, I'll be there again this evening.
To the best of their and my recollection there were no problems when that PC was on Win 7 so that suggests a driver problem, or possibly the dongle is failing.
They wondered about going back to Win 7 but that would be a lot of work - for me, and I don't have the time for several weeks - or a new dongle, one that is certified (?) for Win 10. (They also wondered about replacing the router but I pointed out that it's working fine for the Win 7 PC).
So this generates a number of options and questions, connection speed is not really important, their internet is only around 3-4 Mbps.
Is there a good, reliable, certified for Win 10, USB WiFi dongle?
Is there a way of having something analogous to a WAP in the computer room to convert the wireless signal to an Ethernet connection?
Would Powerline adapters be a solution? Any recommendations for effective, and not overly expensive, adaptors?
Any other - practical - solutions?
We have more and more laws, and less and less enforcement