A friend of mine - DJ, who Kevin knows - went through a bunch of different components and couldn't keep this one computer running as something was always dying. Eventually he realized it had a bad power supply, which was frying other parts of the machine.

Sadly, no such solution arises for Kevin, who kills multiple computers. Lisa has similar problems. I've wondered if it's connected with his flying, but I don't know enough others who rack up lots of air miles to make a informed guess. If it were connected with his software, presumably others in his company would also be killing laptops (which may be the case). It's a mystery all right.