Insert your portable USB drive into a free USB port. If you have USB 3 port (marked SS Super-Speed and blue inside) use this in preference to a USB 2 port to get a much faster backup.
Windows 10
Click Start button (Bottom LH corner) and select Settings Cog just above Power icon. In Settings select “Update Security” > “Backup” > “Go to backup and Restore (Windows 7) “. This will bring up the “Backup or restore” window below.
Windows 7
Click the Windows 7 Start button (bottom left corner) and type “backup”