I am trying to connect my new Sony htrt 40 5.1 surround sound system to my pc via hdmi cable but it doesn't seem to find the stereo at all. I know the sound system works because it works with bluetooth but bluetooth does not properly support 5.1 surround sound. If it helps this is my motherboard. https://www.asus.com/nz/Motherboards/B150M-PRO-GAMING/specifications/