You can change your computer name on a Windows 10 PC to make it more recognizable on your network. Here's how to do it.

Most modern Windows operating systems will defrag your computer automatically, but you can do it manually if you have Windows 7, 8, 10, or Vista.

In fact, to fix this problem you might not even need to spend any money at all. First, try these steps to clean up your old computer, and it may feel brand-new once again.