Better state of mind for everybody: I do not touch other's computers
Better state of mind for everybody: Do not touch other's computers. Useful quotes:
"I do not repair your car, and I do not repair your computer" / "If you clean my house, I'll repair your computer"
"You can consider to go back to Windows factory settings. You will get a fresh computer"
"Buy a new computer", and since some time "Buy a chromebook"
In case of wifi problems: "Call your ISP"
Biting the hand that feeds IT
