Sound that disappears on Windows 11 is rarely a dead speaker. Far more often it’s the wrong output device selected, a muted app in the mixer, or a driver that an update quietly swapped out. The fix is usually a few clicks once you check things in the right order.
This guide works from the most common causes to the rarest. Start at the top even if you’re sure it’s a driver problem — the device-selection checks take seconds and they catch the majority of “no sound” reports before you touch anything deeper.
Start with the obvious checks
It feels too simple, but the output device and mute state account for a large share of cases. Windows 11 also remembers per-app settings, so it’s easy for one thing to be silenced while the rest work.
Click the volume icon in the taskbar and confirm the slider isn’t at zero or muted. Then click the small arrow (>) next to the volume slider to open the device picker, and make sure the right output is selected — laptop speakers, headphones, or an external display.
If only one app is silent, the Volume Mixer is the culprit. Go to Settings → System → Sound → Volume mixer and check that app’s level and its assigned output device. Windows lets each app use a different device, which is handy and confusing in equal measure.
Quick checks first
- Volume isn't muted or at zero
- Correct output device is selected in the device picker
- Headphone/speaker cable or USB device is firmly connected
- Per-app levels in Volume mixer are up and pointed at the right device
Run the audio troubleshooter
Windows 11 includes a guided audio troubleshooter that checks the default device, mute states, and the audio services in one pass. It’s worth running before any manual driver work.
Go to Settings → System → Sound → Troubleshoot common sound problems, or open the Get Help app’s audio troubleshooter. Pick the output device when prompted and let it run. If it changes a setting or restarts a service, test sound again right away.
If the troubleshooter reports everything looks fine but you still have no sound, the problem is likely the driver or a stopped service — keep going.
Check the output device settings in detail
Sometimes the device is selected but configured in a way that produces silence. Open Settings → System → Sound, click the output device to open its properties, and check:
- The device isn’t disabled (there’s an Allow/Don’t allow or enable toggle).
- The format is a standard rate like 24-bit, 48000 Hz. An exotic format the hardware can’t handle can mute output.
- Audio enhancements — try turning them off. Certain enhancement packages misbehave and kill audio entirely.
Reinstall or roll back the audio driver
If the basics are right and there’s still nothing, the driver is the usual suspect — especially after a Windows update or a fresh install. You’ll fix this in Device Manager.
Right-click Start → Device Manager, expand Sound, video and game controllers, and find your audio device (often Realtek Audio, or an Intel/AMD high-definition audio device).
To reinstall cleanly:
1. Right-click the audio device → Uninstall device
2. Tick "Attempt to remove the driver" only if a reinstall is your goal
3. Reboot — Windows reinstalls a working driver on startupIf sound broke right after an update, a rollback is faster. Double-click the device, go to the Driver tab, and click Roll Back Driver if it’s available. That reverts to the previously working driver.
For HDMI or DisplayPort audio through a monitor, the audio driver isn’t the one that matters — that audio rides on the graphics driver. If external-display sound is missing, update the GPU driver (Intel, AMD, or NVIDIA) and the HDMI output should reappear in the device picker. The general process is the same as our notes on updating drivers manually if you want the longer version.
Check the Windows Audio services
If audio vanished with no obvious trigger and nothing above helped, a stopped service is a strong candidate. Two services have to be running for any sound at all.
Open services.msc (press Win + R, type it, Enter) and find these:
Audio services that must run
| Service | Required state |
|---|---|
| Windows Audio (Audiosrv) | Running, Startup: Automatic |
| Windows Audio Endpoint Builder | Running, Startup: Automatic |
| Remote Procedure Call (RPC) | Running (the two above depend on it) |
If either audio service is stopped, right-click it → Start. If it’s already running, right-click → Restart. Set the startup type to Automatic if it isn’t. You can do the same from an elevated PowerShell window:
Restart-Service -Name Audiosrv -Force
Restart-Service -Name AudioEndpointBuilder -ForceRestarting the endpoint builder rebuilds the list of audio devices, which often brings back a device that had gone missing from settings.
Last resorts
If you’ve worked through everything and sound is still dead, a couple of broader options remain:
- System Restore. If audio worked recently, roll the system back to a restore point from before it broke. This undoes driver and update changes without touching your files. See Microsoft’s guidance on using System Restore.
- Check for a hardware mute. Some laptops have a function-key mute (look for an F-key with a crossed-out speaker) or a physical switch that’s easy to hit by accident.
- Test a different device. Plug in USB headphones or a USB DAC. If those play sound, the built-in audio hardware or its driver is the problem, not Windows itself.
Wrapping up
Most “no sound in Windows 11” cases come down to the wrong output device or a muted app — check those first, every time. After that, the troubleshooter and a driver reinstall or rollback cover the bulk of what’s left, and the Windows Audio services catch the cases where sound disappears for no clear reason.
The one trap worth remembering: HDMI and DisplayPort audio comes from the graphics driver, not the sound driver. If external-display sound is your problem, update the GPU driver and skip straight past the Realtek troubleshooting.
