How are you guys? This is my first time at YoReparo, and I have decided to ask this question because I have a problem with my motherboard ECS H81H3-M4. There are two models (one with an HDMI port and the other DVI-I). In my case, I have the model with HDMI. The problem is that when I connect my LG TV to the motherboard via HDMI, there is no signal, since the PC is turned on (which I should not do). Luckily, I have a VGA monitor, which I have connected to verify that it was not an error on the entire board. And there was no problem, there was a video signal since I turned it on. Everything was going well. I went to the BIOS to look for a function that was affecting the port and all I found was about a dual monitor option, which I also activated were DVMT options (it is an Intel technology to use RAM as memory for the integrated graphics), which are also activated. Save changes and restart the PC, but after that, the HDMI port still had no video signal. This bothers me a lot since I use this computer as Hackintosh (install macOS on a PC) and because Apple does not use the VGA port on its computers, I cannot use my VGA monitor, since that way I do not get acceleration by Intel integrated graphics card hardware. (Ports of my motherboard) (HDMI connected) (No signal) (VGA monitor connected to the board) (BIOS settings) Because of this I had to use an NVIDIA graphic that I had saved. It is an NVIDIA GT 610, which works natively on macOS, even VGA, although it should not do so in theory. But the problems came back when Apple decided to remove support for this chart, since the Sierra update (10.12). So since last year I have not been able to use it. Look for information about my board's HDMI port, I have read the manuals, but there was nothing about activating this port. Search Google about other people who were experiencing the same problems, and there really are few solutions (which on my board did not work). The rest are problems with graphics cards and more crap that I don't care about. By the way, HDMI does not work on Windows either. I really thank anyone who can solve my problem, I need it because I edit videos on my PC with Final Cut Pro X and make music with Logic Pro X. Specifications of my PC: - Intel Core i5 4460 - 8 GB DDR3 1600 Mhz - Intel HD Graphics 4600 - Motherboard ECS H81H3-M4