1. Click the “Start button”. It’s usually at the bottom-left corner of the screen.

• Windows periodically checks for updates and installs them automatically. You can still use this method to check for updates that have been released since the last update check ran as well as check for any optional new features.
• After Windows installs an automatic update, it may prompt you to reboot your computer. If you see a message asking you to reboot (or schedule a reboot), follow the on-screen instructions to do so.
    

2. Click “Settings”      It's next to an icon that resembles a gear. It’s toward the bottom of the Start menu in the panel to the left. 

4. Click "Update & Security" It’s the option that has an icon that resembles two curved arrows.

4. Click “Check for updates” It’s the button at the top of the page. Windows will check for updates. If an update is available, it will start downloading automatically. If no updates are available, you’ll see a message that says ″Windows is up to date.″

Leave this window open as the update installs so you’ll know whether you need to restart your computer.

5. Click "Download and install" (optional). Occasionally, Windows will have optional features you can update too. To install these features, click Download and install below "Feature update to Windows 10".

6. Click “Restart Now” It will appear below the header that says "Restart required" when the update is finished downloading. This will restart your computer and complete the update.

To schedule a reboot for later, click Schedule the restart (on the Windows Update window), slide the switch to the On (blue) position, and then select a time you won’t be busy on the computer.