Remember that time when you first bought home your shiny, brand-new laptop? You couldn't believe how fast it was, compared to the ageing one you were replacing it with. But since then, it's slowed ...

First things first: Uninstall any programs you no longer need or use. On Windows, go to Settings, Apps, Installed apps, and hit the three dots next to an app to uninstall it. On Mac, find the ...