Not sure if this is the right category but I have a Dell Latitude E5540 2.5 GHz I5-4300U, 8 GB of DDR3, 500 GB HDD, an I am using Intel HD graphics. I am trying to figure out how to us a secondary monitor with my Hackintosh, an the HDMI port I am trying to use to give the second display a signal isn't working what should I do to fix this?