I have a Asus pg279q monitor and a 65 inch TV in the living room. I bought a long HDMI cable to be able to use my PC in the living room without moving my PC. The problem is that the TV only gets signal when I disconnect the monitor. The TV is recognized and I can see it in the display settings, and weirdly enough I can see the motherboard logo on both TV and monitor but as soon as win10 starts, the TV signal is lost...! I get the feeling there must be a setting I have to change but I cannot figure out what.