Friday was definitely the worst Friday ever. I wandered in to the office with my coffee, and discovered that my main work laptop—an IBM ThinkPad, obviously—had mysteriously powered itself off overnight, instead of merely going to sleep. I booted it, only to get the dreaded Fan error message. (If you’re falling asleep already, skip down to the moral of the story.) A fan error is pretty much the kiss of death for a recent laptop.