How do you know when it's time to upgrade your PC?

[Windows Central]

Think you need a new PC? How do you know when it's the right time? Read this.
A PC is no different than any other piece of electronics; eventually, it just goes beyond its useful life. But, unlike something like a smartphone or a tablet, or even a microwave oven, a PC doesn't have to be thrown out at the first sign of trouble.
Before upgrading a PC, you can upgrade the parts in your PC most of the time before giving in to the inevitable and upgrading the whole thing. But there are some things to consider.

Full story from the WindowsCentral blog...