In this tutorial, we will teach you how to keep your pc secure and prevent data loss with Windows update in Windows 7. By default, Windows downloads and installs updates on its own. In order to make the changes effective immediately, an automatic restart follows. At times, you might be in between something and the restart may result in your unsaved data being lost. In order to avoid such issues, we will teach you how to work with windows update features and how to update your Windows 7. You can either manually download the updates or choose that the updates are downloaded but not installed.