No Sound After a Driver Update on Windows 11? Check Services First

Restart the Windows Audio and Windows Audio Endpoint Builder services in services.msc first – a stopped audio service causes a large share of post-update silence cases and takes under 30 seconds to fix without touching any driver. Windows occasionally resets the default audio output device after a driver update, especially if you have multiple outputs – a speaker, a Bluetooth headset, and an HDMI monitor connected at the same time. If the correct output is selected but volume is at zero or muted, unmute it and test before doing anything else. If the audio device is missing from the output list entirely, the driver issue is more serious and you need to go through the steps below.

Step 1 – Check the Output Device Selection

Click the speaker icon in the taskbar and check which audio device is shown as the active output. After a driver update, Windows sometimes switches to a different output – for example, it may switch from your speakers to HDMI or to a device that is not physically connected. Click the output name, select the correct device, and test. If the device shows correctly but there is no sound, make sure the volume slider is not at zero and the mute button is off. These two things reset more often than expected after a driver install.

Step 2 – Restart the Windows Audio Services

Press Win + R, type services.msc, and press Enter. Find Windows Audio in the list, right-click it, and select Restart. Then find Windows Audio Endpoint Builder, right-click it, and restart it as well. These two services manage all audio routing in Windows 11. A driver update can stop them silently without any error notification. Restarting them often restores sound immediately without any further driver changes. If either service shows as Disabled in its Startup Type column, change it to Automatic, click Start, and restart the PC.

Per Ananya S., who is a Technical Support Analyst at HCL Technologies, “After the 24H2 update broke audio on several Dell machines, restarting the Windows Audio Endpoint Builder service fixed it on most of them within 30 seconds. Driver reinstall was only needed on a minority.”

Step 3 – Roll Back or Reinstall the Audio Driver

If the services are running and sound is still absent, the audio driver itself is the problem. Open Device Manager, expand Sound, video and game controllers, and right-click your audio device – typically Realtek High Definition Audio, Intel SST Audio, or a similar name. Select Properties, go to the Driver tab, and click Roll Back Driver if the button is available. If the button is greyed out, right-click the device, select Uninstall device, check the box to delete the driver software, and restart the PC. Windows will reinstall the audio driver automatically on the next boot. This clean reinstall resolves most cases where the update partially corrupted the driver files.

I ran into this exact problem on a Lenovo IdeaPad after a Windows 11 cumulative update. Realtek audio stopped working entirely – no output device showed in the taskbar. Restarting the Windows Audio service brought the Realtek device back to the output list immediately. The driver itself was fine; the service had stopped silently during the update. It took about 20 seconds to fix from services.msc without touching any drivers at all.

Step 4 – Download the OEM Audio Driver From the Manufacturer

If automatic driver reinstall does not restore sound, download the audio driver directly from your PC manufacturer support page – not from Windows Update or the generic Realtek/Intel website. OEM audio drivers are tuned for the specific hardware configuration and often fix problems that the generic driver from Windows Update does not address. Search your PC model on the manufacturer support page (Dell, HP, Lenovo, ASUS, etc.), filter by Audio under the driver category, and install the latest available version.

After installing the OEM driver, if Device Manager shows the audio device correctly but there is still no sound, open the Sound control panel (search for Change system sounds), go to the Playback tab, right-click your speaker device, and select Set as Default Device. Some driver reinstalls reset the default playback device to something other than your speakers. See the Microsoft Support guide on fixing sound problems in Windows for additional troubleshooting steps if the issue continues. For Realtek-specific driver downloads, the Realtek official driver page has the latest HD Audio codec drivers.

Frequently Asked Questions

Why did my audio stop working after a Windows 11 update?

Windows Update sometimes replaces a working OEM audio driver with a generic Microsoft or Realtek driver that is not fully compatible with your hardware configuration. It can also stop the Windows Audio services silently during installation. The services fix is worth trying first as it takes under a minute and works in many cases.

What is the Windows Audio Endpoint Builder service?

The Windows Audio Endpoint Builder service manages the connection between the audio driver and the audio devices on your system. It identifies and registers all audio endpoints – speakers, headsets, HDMI outputs – and routes sound to the correct device. If this service stops, Windows cannot find any audio devices, even if the driver itself is installed correctly.

What if my audio device does not appear in Device Manager at all?

If the audio device is missing from Device Manager entirely, go to View > Show hidden devices and look for a greyed-out audio entry. Right-click it and uninstall it, then restart the PC. Windows should detect and reinstall the audio hardware on the next boot. If the device still does not appear, try reseating any internal audio connections on a desktop, or check BIOS settings to confirm the audio controller is enabled.

Should I use Realtek’s website or my PC manufacturer’s site for the driver?

Use your PC manufacturer’s site first. OEM audio drivers from Dell, HP, Lenovo, and ASUS are customized for your specific hardware and often include fixes for issues that the generic Realtek driver does not address. Only use the Realtek website directly if your manufacturer does not have an updated driver available and the generic version resolves the issue.

Conclusion

When sound stops after a Windows 11 driver update, check the output device selection first, then restart the Windows Audio and Windows Audio Endpoint Builder services in services.msc – most post-update audio failures are caused by a stopped service rather than a broken driver. If the services fix does not work, roll back the driver or uninstall and reinstall it cleanly. Always try the OEM driver from your manufacturer support page before using the generic Realtek or Intel driver from Windows Update, as OEM versions are tuned specifically for your hardware.