To update your Windows 7, 8, 8.1, and 10 Operating System:
- Open Windows Update by clicking the Start button in the lower left corner. In the search box, type Update, and then, in the list of results, click Windows Update.
- Click Check for updates, and then wait while Windows looks for the latest updates for your computer.
- If you see a message telling you that important updates are available, or telling you to review important updates, click the message to view and select the important updates to install.
- In the list, click the important updates for more information. Select the check boxes for any updates that you want to install, and then click OK.
- Click Install updates.
Note: It is important that you do not shut your computer off or allow it to run out of battery during the update process. Doing so can cause a corruption of the operating system, which can often only be fixed by reformatting the computer.
For information on Microsoft Windows Automatic Updates, visit Microsoft's Update site.