The only unusual thing I've noticed with the laptop is that the CPU fan wants to run at full speed all the time, even though the computer is never used for any 'processor-intensive' tasks. Now both computers have Windows 10 and so far it has been running. The upgrade process on the laptop also completed successfully. The laptop is a Toshiba Satellite L855, with an Intel Core i3-2370M processor. So, motivated by how well everything went with that computer, I decided to upgrade Windows on a laptop as well. I recently installed Windows 10 on a desktop computer and everything went as smoothly as it could have, with no problems at all.
I have posted this in other forums, too, in the hopes of getting some ideas.
