When I change the individual-element font sizes (in Control Panel> Display), they look fine for that session, but go right back to the default the next time I log in. How can that be prevented? I upgrade 2 machines to Win10 and thought I configured them identically but this is only happening on one.

I'm not blind or crotchety, but my eyesight is such that the default 9-pt Segoe font is simply not legible.

Grateful for any clues, workarounds, third-party rescue software, etc....