I have a laptop (Asus 555 L) and I tried connecting it through HDMI to use the TV as a big display screen. The image is working flawlessly, but I have problems with the sound, I only hear sound coming from my Laptop and I can't make it the other way around, to hear from the Smart TV speakers, the TV is a Panasonic from 2014. The cable is top notch, I tested it on another Display and it playbacked sound from my laptop. Does anyone know what the problem might be. I thought of it to be software, so I updated and reinstalled my laptop audio drivers and also I updated the software on the TV but maybe I done something wrong. Needless to say, I would really appreciate a helping hand.