A computer is sort of like a car. Once you get one, you stick with it for a few years, until it breaks or something significantly better comes along. Unlike smartphones and tablets, which are typically replaced on a yearly or bi-yearly basis, PCs can last a lot longer in the current computing landscape. Before you go ahead and dump your aging PC, let’s break a few things down. Here we’ll primarily discuss laptops and desktops. And for the sake of the argument, we’ll include tablets in the notebook (or ultraportable category), though you can’t really mess with this particular type of product when it comes to replacing its innards. Read on to help make a judgment call about your PC.