Alienware 17 R4 laptop, Windows 10 pro. The monitor is an LG ultrawide. Audio Manager shows the option for Realtek Speakers and Headhones, LG Ultrawide-8 (Nvidia HD), Nvidia HD Output (unplugged). I've tried all of these without any results. Both Nvidia under output properties say they are HDMI Digital Jack. I would like to use one of these.