It’s possible to make an old computer run like new by performing a clean install of the OS. This means erasing everything on the primary OS drive and returning it back to its original factory state. This process used to be difficult, but it’s now much simpler to do and can easily be found in your computer’s backup settings. Don’t forget to back up all your important files first. After completing the reinstallation, you’ll may be surprised at the significant boost in speed and performance your computer exhibits.