Re: "This will only take a second..."
My method when I eventually became too tired to continue disinfecting the machine of a family member was to take their admin rights away. They really didn't complain too much. Then, they decided to upgrade from windows 7 to 10, didn't like 10, and downgraded via the 7 install disk, creating many problems and incidentally creating a new admin account. I was called in to help them find their critical documents, and I made it clear that I would not be working on this computer anymore if they intended to continue using it like that.