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I have windows 10 on Hp all-in-one desktop.  When I plug in a second monitor in the HDMI port I get a blank screen.  I have gone in a separated it from 1/2 to where it shows 1, 2 screens.  The second monitor show a black screen.  Not sure what to do.

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@Hardworker996 

 

What is your machine ? Does it have HDMI out port ?

 

Regards.

BH
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