There's always one.

Operator:         "Ridge Hall, computer assistance; may I help you?"
Caller:              "Yes, well, I'm having trouble with WordPerfect."
Operator:         "What sort of trouble??"
Caller:              "Well, I was just typing along, and all of a sudden the words went away."
Operator:         "Went away?"
Caller:              "They disappeared."
Operator:         "Hmm So what does your screen look like now?"
Caller:              "Nothing."
Operator:         "Nothing??"
Caller:              "It's blank; it won't accept anything when I type."
Operator:         "Are you still in WordPerfect, or did you get out??"
Caller:              "How do I tell?"
Operator:         "Can you see the C: prompt on the screen??"
Caller:              "What's a sea-prompt?"
Operator:         "Never mind, can you move your cursor around the screen?"
Caller:              "There isn't any cursor: I told you, it won't accept anything I type."
Operator:         "Does your monitor have a power indicator??"
Caller:              "What's a monitor?"
Operator:         "It's the thing with the screen on it that looks like a TV. Does it have a little light that tells you when it's on??"
Caller:               "I don't know."
Operator:          "Well, then look on the back of the monitor and find where the power cord goes into it. Can you see that??"
Caller:              "Yes, I think so."
Operator:         "Great. Follow the cord to the plug, and tell me if it's plugged into the wall.
Caller:              "Yes, it is."
Operator:         "When you were behind the monitor, did you notice that there were two cables plugged into the back of it, not just one??"
Caller:               "No."
Operator:          "Well, there are. I need you to look back there again and find the other cable.."
Caller:               "Okay, here it is."
Operator:          "Follow it for me, and tell me if it's plugged securely into the back of your computer."
Caller:               "I can't reach."
Operator:          "Uh huh. Well, can you see if it is??"
Caller:               "No."
Operator:          "Even if you maybe put your knee on something and lean way over??"
Caller:               "Oh, it's not because I don't have the right angle - it's because it's dark."
Operator:          "Dark??"
Caller:               "Yes - the office light is off, and the only light I have is coming in from the window.
" Operator: "Well, turn on the office light then."
Caller:               "I can't."
Operator:          "No? Why not??"
Caller:               "Because there's a power failure."
Operator:  "A power......... A power failure? Aha, Okay, we've got it licked now.
Do you still have the boxes and manuals and packing stuff your computer came in??"
Caller:               "Well, yes, I keep them in the closet."
Operator:           "Good. Go get them, and unplug your system and pack it up just like it was when you got it. Then take it back to the store you bought it from."
Caller:                "Really? Is it that bad?"
Operator:            "Yes, I'm afraid it is."
Caller:                 "Well, all right then, I suppose. What do I tell them??"
Operator:            "Tell them you're too bloody stupid to own a computer!!!!!"