As a complete technie dinosaur, I just wanted to empathize with what you're experiencing. Whenever my computer does its own thing, I get completely frazzled. Might it not be better to revert to Windows 10 if that's an option? Wishing you and your non-computerate elderly friend (sounds so much like me ... but it isn't!!) all the very best for a successful outcome, and en route, a better night's sleep.