A:Answer I am not a tech person, but here's my two cents. Both of my HDMI ports are working. I have them plugged in with a space between them. One of my monitors has TWO HDMI ports in the back. I had to switch out the one I plugged into on the monitor before it would work. You can also change the setting on the monitor itself to choose to input from the other HDMI port, but I thought it was easier to just plug into the other one. It sounds like you could have a different issue, but I thought I would share just in case. I also had to set up both monitors on my laptop under "Multiple Monitors," I believe. Best of luck to you!