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When you press Winkey + P in Windows 10 you will get this menu on the right side of the monitor:

enter image description here

The program and switches behind these options are as follows:

PC screen only :: displayswitch.exe /internal
Duplicate      :: displayswitch.exe /clone
Extend         :: displayswitch.exe /extend

What is the switch for:

Second screen only :: ???
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52

Second Screen only:

displayswitch.exe /external 

This should hopefully help you with your problem.

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  • is this displayswitch.exe windows 10 only ? May 23 '17 at 14:22
  • 4
    this works with windows 7 too.
    – TiO
    May 23 '17 at 14:28
  • 2
    you don't need to type the '.exe'
    – Octopus
    May 23 '17 at 22:30

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