Microsoft no longer officially supports Windows 10, so do this if you want to keep using your older PC securely.

If you've installed the big Windows 11 update that Microsoft pushed out in August (which also includes the new Black Screen of Death), you'll notice a brand new entry in Settings: Quick Machine ...

Disk Cleanup is another utility that is accessible regardless of your Windows version. The easiest way to open it is to search for "Disk Cleanup" in the search bar and bring up the window.