how to use dual monitors windows 8
1 Plug a monitor into your video port. 2  Windows 8 will automatically detect your monitor. 3  Press Windows () key + K to bring up the Device charm. 4  Click Second screen and then choose one of these options: 5  Duplicate-You will see the same on both screens. Plug a monitor into your video port. 2  Windows 8 will automatically detect your monitor. 3  Press Windows () key + K to bring up the Device charm. 4  Click Second screen and then choose one of these options: 5  Duplicate-You will see the same on both screens.