Hi everyone, I have been struggling with this for weeks - whenever I plug my computer into a TV through an HDMI cable, the screen visual transfers perfectly but no sound comes through the TV. Please note that I have scoured the forums and have tried all of the basic suggestions that people have given: -HDMI or similar does not show up in 'Playback Devices' -All of my drivers are up to date I am running Windows 8.1. I have an ASUS Q550L notebook (can see all the specs here: Asus 15.6' TouchScreen Laptop Intel Core i7 8GB Memory 1TB Hard Drive Q550LF-BSI7T21 - Best Buy) Please help!! If I had to guess, I'd say it's a handshake issue (your laptop and television are not communicating the HDMI signal appropriately). In Windows 8.1, if you bring up the Windows audio controls in the lower right task bar, you'll likely find that your television does not appear as an audio choice. I'd recommend trying two things to see if it solves your problem: 1) Restart the Windows audio service.
Press your Windows key + R to bring up the Run dialogue box. Type in services.msc and select the Windows audio service. 
Kniga znanij ot mevlani chitatj onlajn.
Driver & Tools. Driver & Tools BIOS & FIRMWARE. Email Us Find service locations. Please select your CPU or BIOS model name. Please choose.
Now try to select your television as the audio device. 2) If the above step is unsuccessful, restart your computer while the television is on and connected to your laptop through HDMI. Audio should play automatically.
I have the same laptop and have had the same problem for the past year. I just found a solution this last Christmas when my family was messing around with it and trying to get it to work. It is a hassle still but it works for me now. We realized tat if the hdmi is plugged into the TV and you restart the computer with the hdmi cable still plugged in when the computer restarts the sound will play through the TV. It's a hassle because once you unplug it you have to restart the computer again. For some reason the laptop doesnt recognize the TV as a speaker unless you restart the computer.
Anyway, I hope this works if you haven't found a solution yet or for those others who may come along with the same problem. ASUS Q550L notebook: Asus 15.6' TouchScreen Laptop Intel Core i7 8GB Memory 1TB Hard Drive Q550LF-BSI7T21 - Best Buy HDMI sound not playing on TV. HDMI Picture coming through but no sound. Hi everyone, I have been struggling with this for weeks - whenever I plug my computer into a TV through an HDMI cable, the screen visual transfers perfectly but no sound comes through the TV.
Please note that I have scoured the forums and have tried all of the basic suggestions that people have given: -HDMI or similar does not show up in 'Playback Devices' -All of my drivers are up to date I am running Windows 8.1. I have an ASUS Q550L notebook (can see all the specs here: Asus 15.6' TouchScreen Laptop Intel Core i7 8GB Memory 1TB Hard Drive Q550LF-BSI7T21 - Best Buy) Please help!! I have every sympathy with the OP because people are not getting the point. Not just here but across many forums. He & I are suffering from the fact that the HDMI output device has totally disappeared from the Sound devices list.
Not even present as a Hidden or Disconnected device. Within Device Manager my HDMI Sound Device somehow turned into 'Intel(R) Display Audio' instead, and even that doesn't show up as a Playback Device either.
So, simply re-powering with HDMI plugged in will NOT magically make it unveil itself and become the default output. It seems to have been thoroughly masked by something. I have never yet found a solution to this (tried totally obliterating device and reinstalling Intel's drivers) apart from going back to an earlier disk image. But I don't have that option right now with my Mac Mini (Intel HD 4000 graphics). I can't play back my newest 6-channel movie! Another workaround I found without restarting the laptop.