Unless you’re a die hard tinkerer, PC maintenance probably feels as much of a chore as servicing your car. Fortunately, maintaining your computer is a lot easier than that — and you don’t get dirty to boot. Still, it can be a drag. Fortunately, if you want to take a lot of the complexity, monotony, and uncertainty out of PC maintenance, there are apps out there that can handle most of the hard work of giving your PC a physical, and they can alert you to things you might...