Searching for Control Panel with Cortana.Besides, you may want to note any new software you have installed on your computer since the last backup, as you will need to reinstall them later on. You only need to make a backup of your new files since the last full backup or simply copy all your files to an external drive. If you have the backup, you are haft way done. That will guide you through what you need to do before upgrading, including creating a full backup of your computer. If you haven't upgraded to Windows 10, check out my previous post on how to prepare your computer for Windows 10.

You should always keep a backup of your computer before modifying any operating system.