02-25-2019 02:47 PM
Make sure you are using the correct HDMI port.
There is one that should have been blocked out in the IO sheild. Then there is one on the Video Card itself.
You need to use the one on the Video Card.
This photo isnt exactly as your Omen system, but should give you the idea.
Does this help? Let us know.
02-25-2019 03:10 PM
If the monitor and HDMI cable works on another computer but not the new one, you may have a hardware issue.
Here is the link to HP Support. I would contact them asap. You shouldnt have to purchase a displayport adapter or cable (if thats what you meant).