I plugged the HDMI cable from my laptop to TV, it displays picture perfectly but no audio. The audio will only come from my laptop. I have tried pretty much everything, I displayed disabled devices and the HDMI Output Audio is not there. The only options available are my laptop's speakers. My laptop is a HP Envy using windows 8.1 with a NVIDIA GeForce 840m graphics card.. Please if anyone can help I would greatly appreciate it!