Second screen is the first screen output?

Hi

Yesterday I have reinstalled my PC with my second screen because I have played on my first screen PS4 and now I have the problem that my second screen is recognized as the first screen (1st Bildschrim left 2nd screen right) My 2nd Screen is unfortunately too small to gamble so I want to gamble on my big screen

Does anyone know how to switch? That I can play on my big screen

Operating system?

Just unplug the cable from the screen you do not want to use.

I would like to use both Yes to watch my second screen Netflix and gamble on my ErstBildschrim the Great PUBG

Windows 10 Pro 64 BIT

Then you can change that in the display settings.

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This is how it looks in the settings (on the second screen)

Click the frame with the two, and then choose "set as main screen" (or similar)

Since I've already checked whether it is there to Jezt I have not found anything: U

EDIT: Habs Found Thank you for your help!