How to Fix No Audio on TV on a Steam Deck With Windows

howtogeek.com:

If you run Windows on your Steam Deck and experience audio issues when hooking it to a TV, you’ve come to the right place. Our troubleshooting guide features nine potential solutions, one of which should solve your audio issues when connecting Steam Deck with Windows to a TV.

Try the High Definition Audio Controller Fix Check Whether Everything's Working on the TV Side Reboot Your Steam Deck Test Your Steam Deck's 3.5mm Audio Jack Confirm Steam Deck Windows Drivers Are Installed Check Windows Sound Settings and Troubleshoot if Needed Test Your USB Dock/HDMI Adapter and HDMI Cable Install Windows Updates Connect to the TV With SteamOS Instead

Many users suffering from the no audio on TV issue, including us, have found that tweaking the “High Definition Audio Controller” settings in Windows Device Manager fixed the problem.

Begin by right-clicking the “Start” button — this works the same in Windows 10 and Windows 11 — then click on the “Device Manager” button on the list.

Once in there look for the “System Devices” tab and double-click on it. The tab should expand with one of the devices listed being the aforementioned “High Definition Audio Controller.”

Right-click on the “High Definition Audio Controller” button and then click on either “Enable Device” if it’s disabled or “Scan For Hardware Changes” if the device is enabled. One of the two actions should make Windows recognize your TV and solve your issue. Scanning for hardware changes fixed the issue in our case.

In Windows 11, you can confirm whether Windows now recognizes your TV by right-clicking the quick settings button (the one with Wi-Fi, battery, and audio icons) in the taskbar and then clicking on the speaker icon.

You should see your TV among the “Sound Output”