As you accumulate files and programs, your storage eventually fills up. This could potentially slow down your system as it takes longer to search for the data it needs. It is recommended that you have at least 15 percent free space on your operating system drive for optimal performance.
In Windows 10, the easiest way to check for free space is to open Settings >> System >> Storage. This will display all the drives that you currently have with a graphical representation of the remaining free space.
Selecting a drive will show you a breakdown of what kind of system data is occupying it. A category you might want to check first is Temporary Files. In here, Windows 10 could automatically clear all the temp files that the system doesn't require to run, like temporary internet and program files and caches.
(Note: You might have a section here called "Previous version of Windows." It's quite large, about 30GB, but don't delete previous versions if you plan on going back to Windows 7 or 8.1 .)
PC: Uninstall programs that you don't use
Most of the time, we have applications we have installed, used once and have totally forgotten about. These programs still occupy hard drive space and may even have temporary files and folders installed. They could even be running in the background, sucking out memory and resources so it is in your best interest to track them down and uninstall them.
To do this in Windows 10, go to Settings >> System >> Apps and Features. This will list all the programs and apps you have currently installed with their corresponding size. To remove, just click on the program or app then choose "Uninstall."
Other Mac and PC tools
A better way to clean up your Mac or PC is via third-party applications like CCleaner. Not only will CCleaner clear out your system's temporary files, cache, and unwanted applications, it also does automatic clean-ups of your browser cookies, trackers, internet history, download history, cache and even individual session activity.
One thing you need to do before getting rid of an old gadget or computer
Have you decided that it's time to let go of your aging computer? Here's one thing you must do before getting rid of it.