Install external screen with primary screen not working

I have an hp tx 1000 and the main display does not work. How can I hook up an external screen when I can't get to any of the options?

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More about install external screen primary screen working
  1. Use the key sequence fn+F4 to toggle to the external monitor.
  2. I've tried that already. I have hit it multiple times with a couple if minutes in between with no luck.
  3. Then your video chip may have failed :(
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