AMD High Definition Audio Device Not Plugged In: Fixes

If Windows says “AMD High Definition Audio Device not plugged in,” it usually cannot detect an active audio output through an AMD graphics card’s HDMI or DisplayPort connection. Select the right display output, check the cable and monitor, then refresh or reinstall the AMD audio driver if needed.

What the AMD audio device does

AMD High Definition Audio is generally the audio component used to send sound from a computer to a device connected to an AMD graphics card over HDMI or DisplayPort. The sound travels through the same cable as the video and is played by the connected monitor, television, or receiver. It is not usually the audio device for the computer’s built-in speakers or a headset plugged into the motherboard.

Windows may show the device as disconnected when the display is off, disconnected, set to another input, or unable to report an audio endpoint. That status does not automatically mean the graphics card is damaged. If you listen through motherboard audio, USB speakers, or Bluetooth headphones, the AMD device may not be relevant to your current setup.

Try these checks first

Confirm the connection. Make sure the HDMI or DisplayPort cable is plugged into the graphics card’s output, not an unrelated port. Reseat both ends and, if practical, test another cable or display input.
Turn on the display and select its input. Wake the monitor or TV, choose the HDMI or DisplayPort input in its controls, and check that it is receiving a picture. Some displays do not expose their audio endpoint to Windows while asleep or on a different input.
Choose the intended Windows output. Open Settings > System > Sound. Under Output, select the monitor or television if you want sound over HDMI or DisplayPort. If you want sound from another device, choose that device instead.
Check the display’s audio settings. Ensure its volume is not muted and that its built-in speakers, if present, are enabled. Some monitors have no speakers, although they may offer an audio output for headphones.
Restart with the display connected. Leave the display on and connected, then restart Windows. This can prompt the graphics and audio components to detect the display again.

Set the playback device in Windows

Windows can keep an old output selected after a monitor is unplugged or replaced. In Settings > System > Sound, inspect the listed output devices and select the endpoint that matches the connected display. Use the volume control and, where available, the output-device test to check whether sound reaches it.

You can also open the classic playback-device panel: press Windows key + R, enter mmsys.cpl, and press Enter. On the Playback tab, right-click an empty area and enable Show Disabled Devices and Show Disconnected Devices if those options appear. If the display endpoint is disabled, enable it and set it as the default only if you want it to handle audio. A disconnected device may remain unavailable until Windows detects the display connection.

Menu labels can vary slightly between Windows versions and driver packages. The important distinction is between the output you intend to use and an endpoint Windows currently reports as disconnected; setting an unavailable device as default will not make the cable or display connection work.

Refresh the AMD audio driver

If the display and cable work but the audio endpoint is missing or remains disconnected, refresh the graphics-related audio device in Device Manager.

Right-click Start and open Device Manager.
Expand Sound, video and game controllers. Look for an AMD audio entry. Also check Audio inputs and outputs for a display endpoint.
If the AMD entry is present, right-click it and choose Disable device, wait briefly, then choose Enable device. If that does not help, select Uninstall device and restart Windows. Avoid selecting an option to remove driver software unless you have a suitable replacement available.
If the entry is absent, use Action > Scan for hardware changes in Device Manager, then restart with the display connected.

For a persistent problem, install a compatible graphics driver for the exact graphics hardware and Windows installation. Use the computer maker’s support page for a laptop or prebuilt desktop when its system-specific package is recommended; otherwise, use the graphics hardware maker’s official support resources. Follow the installer’s prompts and restart if requested. Avoid driver-download sites that bundle utilities or promise automatic fixes.

Why the device may still say disconnected

Wrong physical port: A desktop may have video ports on both the graphics card and motherboard. The display must be connected to the graphics card for its HDMI or DisplayPort audio endpoint to be used.
Display capability: A screen may have no built-in speakers, may not support audio over the connection, or may route sound only through a separate headphone jack. Check the display’s manual or settings rather than assuming every HDMI screen plays audio.
Sleep, input, or connection changes: Turning off a screen, switching its input, using an adapter, or connecting through a receiver can affect endpoint detection. Reconnect the chain and restart with the intended display active.
Driver mismatch or update: A graphics-driver change can leave the audio component unavailable or out of date. Reinstalling a compatible driver can help, but it will not fix a faulty cable, unsupported display audio, or muted speakers.
Different audio path: A USB headset, Bluetooth device, or motherboard speaker output uses a different endpoint. In that case, select the actual device you use rather than trying to make AMD display audio the default.

A useful diagnostic is to separate picture from sound. If the display has no picture, troubleshoot the video connection and selected input first. If the picture works but the monitor does not appear as an audio output, check whether it supports audio and whether Windows detects it in Device Manager and Sound settings. If another output works, the issue is likely specific to the display-audio path rather than all sound on the PC.

When to seek more help

If the endpoint remains absent after checking the display, cable, and compatible driver, test the display with another computer or test the PC with another known audio-capable display if available. These comparisons help distinguish a display or cable issue from a Windows or graphics-driver issue. If Device Manager shows a warning symbol, note the device name and status details before changing more settings; they can help identify whether Windows reports a driver or hardware problem.

Do not remove unrelated audio devices or repeatedly uninstall drivers at random. If this is a managed work or school computer, or if the device is part of a custom multi-display or receiver setup, consult its administrator or the relevant equipment support documentation before changing system drivers.

Frequently Asked Questions

Does “AMD High Definition Audio Device not plugged in” mean my graphics card is broken?
No. Windows may show that status simply because no active HDMI or DisplayPort audio endpoint is detected. Check the display, connection, selected input, and driver before suspecting hardware failure.

Can I fix this if my monitor has no speakers?
You may not be able to play sound through the monitor if it has neither built-in speakers nor an audio output. Choose another output device, such as speakers connected to the computer, a USB headset, or a Bluetooth device.

Why does the monitor show a picture but no sound?
Video can work even when the display’s audio endpoint is unavailable, muted, or unsupported. Select the display in Windows Sound settings, check its audio settings, and confirm that the monitor supports audio over the connection.

Should AMD High Definition Audio be my default device?
Only if you want sound sent through the graphics card to a connected display or receiver. Otherwise, set the speakers or headset you actually use as the output.

Will reinstalling the audio driver always solve it?
No. It can resolve a driver problem, but it cannot make an unplugged, inactive, or audio-incompatible display available. Check the physical connection and display capability first.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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