NOTE: Before performing any significant repairs, back up your computer's hard drive.
Windows 10 periodically checks for updates so you don’t have to. When an update is available, it’s automatically downloaded and installed, keeping your device up to date with the latest features.
To check for updates now, select the Start button, and then go to Settings > Update & security > Windows Update, and select Check for updates. If Windows Update says your device is up to date, you have all the updates that are currently available.