Problem all three monitors are showing the same display
1. You will see the windows key which is located in the bottom left of the keyboard.
Select the Key and together with the letter . You will get the following screen.
Ordering the viewing order of the screens
You will next be presented with the screen below.
Don’t worry if your screens are not in the same order as below.
Choosing your main screen
Highlight the screen you want to be your main screen this will be the one to have your main desktop. Then Scroll down and then select your main screen.