A:Answer Navi, I am sorry that you are having difficult time displaying your HP Omen desktop to different monitors using different HDMI cables. One option is to switch over to DisplayPort, which has better video data transfer rates. Another option is to contact HP Support or Geek Squad and they can look into why nothing is displayed through the HDMI port. Make sure to use the DisplayPort ports that are on the card, not on the system board.