Once we had a customer bring his system into our service center. He seemed to know a little about computers but thought he was an expert, so as soon as I started to ask a few basic questions about his hard drive problems, he said, "Look, I know that it's the hard drive thats stick because when I do this it works again." As he spoke, he lifted the back of the tower off the bench by about four inches and dropped it.
My jaw dropped by about the same amount, and my supervisor, who was nearby at the time, just stared at the system. I recovered enough to say, "Well, we'll take care of it now, so…