“My HDMI cable is attached to my USBC adapter, to my MacBook Pro. Why isn't the monitor turning on when I press the power button?”

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• I had this same issue, and here's how I resolved it. First, make sure your USBC adapter is plugged into the correct slot. It won't show your screen if it's not in the right slot. I also adjusted my display in the settings menu to "approved" the display on the monitor.

  Answered by marysadigidiva 4 years ago

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