Best one I know was done by a friend. He had gotten some work done on his vehicle, and when he went to pick it up, he discovered that the garage was dipping into his pocket big time. My friend doesn't know vehicles, so he just had to suck up their crap about muffler bearings, etc. But he knew he was being taken. While he was paying at the counter, he said, "Do you smell that?" "What?" "Your computer. Get closer to it, and you can smell it." "Wow, what's that mean?" "It means the power supply has gone and the motherboard is about to fry." "What should I do?" "You ought to shut it off immediately and take it to a computer repair shop as soon as possible." With that, the sales guy shut off the PC.