Re: Can you hold down the power button
I feel this guy's pain, having been in this exact situation. Had to phone a remote depot once to get a batch PC rebooted which we pulled data from remotely, and found that the only person still in the office was the depot secretary.
After a short conversation and some pleasantries, I had to describe my request - and through a bit of probing quickly discovered that I had to phrase what I wanted her to do in terms of typewriters since she hadn't a clue about computers. Did the trick and got her to toggle the power switch once she'd managed to locate it.