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  1. Check the screen and the computer to be sure both are powered on. It is also worthwhile to restart the devices if you have not already.
    1. To restart the screen: Using the power button on the screen or a remote controller, power the screen off then back on. Many screens will default to the correct source on startup. If it doesn't default to the correct source, use the remote or screen buttons to navigate to the correct source.
    2. To restart the computer:
      1. Find the power button for the computer and press it once to shutdown. The computer will safely shut down after a few seconds, simply wait for the power button and any other lights to turn off.
      2. If the computer does not shut down you may have to force it. To force the computer to power off, press and hold the power button for at least six seconds. The computer should power off.
      3. Allow the computer at least 10 seconds before attempting to power back on by pressing the power button.

  2. Check that the screen is on the correct input source. This varies per setup but typically it should be on an input such as HDMI, DisplayPort/DP, Video, or DVI.

  3. Check all wired connections to make sure the cables are securely connected to each device. 
    1. The computer will need to be connected to power, network, and to the screen via a video cable (HDMI, DP, DVI, etc.). 
    2. The screen will need to be connected to power, and to the computer. Some configurations may have more or less connections depending on the specific equipment installed, and some screens have a built-in computer.

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