Quick answer
If HDMI video works but there is no sound in Windows 11, first select the HDMI display as the output device, confirm the TV or monitor actually has speakers, and check its volume before blaming the cable or driver.
Windows audio troubleshooting
HDMI audio problems can be confusing because the video side often works perfectly. If the picture is on the TV or monitor but the sound is missing, that usually means the display path is good enough for video while the audio endpoint, speaker setup, driver, or adapter path still is not right.
Quick answer
If HDMI video works but there is no sound in Windows 11, first select the HDMI display as the output device, confirm the TV or monitor actually has speakers, and check its volume before blaming the cable or driver.
Safe order
Monitor reality check
This catches people all the time. Windows may happily show the monitor as an HDMI audio device even if the monitor has no built-in speakers, no headphone output, or speakers that were disabled in the monitor menu. If you are using a desktop monitor instead of a TV, check the model specs before spending an hour on drivers.
If the broader issue is that Windows has no sound through any path, step back to No Sound in Windows 11. This page is specifically for the case where the video already works through HDMI.
Graphics audio path
HDMI and DisplayPort audio usually travel through the graphics hardware. That means NVIDIA, AMD, Intel graphics, or dock-related audio components may be involved even though you are troubleshooting sound. If Device Manager shows the display audio device missing or warning-marked, the graphics-side driver matters more than the usual laptop speaker driver.
Use How To Update Graphics Driver Windows 11 or the broader How To Update Drivers Windows 11 guide if the issue started after an update or docking change.
Adapters and docks
An HDMI cable by itself is one thing. A laptop running through USB-C, Thunderbolt, a dock, or a small HDMI adapter adds more variables. Some adapters handle video reliably while audio pass-through is inconsistent. If sound returns when you connect directly instead of through the dock, that tells you where the real fault probably lives.
If a dock or adapter also causes USB devices to misbehave, the issue may be broader than HDMI audio alone.
Display mode
Display mode is not usually the first thing to blame, but it can matter when several monitors are attached. In duplicate mode, Windows may behave differently about the active audio endpoint than it does in extend mode. If the sound device list keeps shifting as displays wake and sleep, test with only one external display connected.
This usually happens because Windows is using the wrong output device, the TV or monitor volume is off, the display has no built-in speakers, the graphics audio device is disabled, or the HDMI path through a dock or adapter is not passing audio correctly.
No. Some monitors accept HDMI video but have no built-in speakers or audio output path, so Windows can send audio there even though nothing will actually play.
Yes. HDMI and DisplayPort audio usually ride through the graphics device, so a GPU or graphics-audio driver issue can stop sound even while video still works.
Yes. Docks, USB-C hubs, and adapters add another link in the chain and can affect whether audio is passed through correctly.
Sometimes. Duplicate and extend modes can affect which display Windows treats as the active audio endpoint, especially when several screens are attached.
Hardware is more likely when several cables and ports fail the same way, the TV or monitor audio works with other devices but never with this PC, or docks and adapters behave inconsistently.