After a Windows 10 or 11 update, it sometimes happens that the sound disappears without warning. Whether it’s a laptop or a desktop, the speaker’s lack of response can quickly become a headache. This article offers a detailed dive into possible causes and proven solutions to restore clear and functional sound in no time.
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In brief
📌 Common cause: a driver incompatibility or a setting reset by the update.
🔧 First reflex: check the device manager and run the built-in audio troubleshooter.
💡 Quick solution: reinstall or roll back the audio driver to restore sound.
⚙️ Advanced tip: check the Windows Audio and Realtek/Conexant services via the “services.msc” console.
Why sound disappears after an update
When installing a major update, Windows replaces or modifies certain system files. The audio driver, the key component of sound output, may be updated to a version incompatible with your sound card. Sometimes, it’s a registry change or the accidental disabling of a service that completely cuts off all audio streams.
On some models, notably HP, the error No audio output detected indicates an inconsistency between the device manager and the hardware component. In reality, the device is still present, but Windows no longer recognizes it as “active”.
1. Driver problems
Each sound card requires a suitable driver. An update may install a generic driver that is too old or too recent, unable to communicate with the audio chip. Sometimes, there are multiple versions of the same driver (Realtek, Conexant, Intel SST) and Windows chooses the wrong one.
2. Disabled Windows services
The “Windows Audio” and “Windows Audio Endpoint Builder” services must be running to ensure sound output. If one of them is stopped, the system loses the connection point between the kernel and multimedia applications.
3. System settings reset
Some updates reset the volume or change the default output (headphones, speakers, HDMI). Result: you play music, but the stream does not reach the active device.
Diagnosing the problem step by step
- Open the Device Manager (Win+X), Audio Controllers section. Check for the presence of a yellow triangle.
- Launch the audio troubleshooter: Settings → System → Sound → Troubleshoot.
- Check the Windows services via “services.msc” and ensure that Windows Audio is set to Automatic.
- Examine the default audio output: right-click the volume icon → Open sound settings.
- Test with headphones or an external speaker to isolate hardware malfunction.
Solutions to restore sound
1. Update or reinstall the audio driver
Go to the website of your motherboard or PC manufacturer, then download the recommended version of the audio driver. If your machine has a Realtek chip, prioritize the official package rather than the generic driver from Windows Update.
Note: for a quick rollback, in Device Manager, right-click the audio device → Properties → Driver → Roll Back Driver.
2. Check and restart audio services
| Service | Description | Startup Type |
|---|---|---|
| Windows Audio | Global sound management | Automatic |
| Windows Audio Endpoint Builder | Audio endpoint | Automatic |
| AudioEndpointBuilder | Physical connection | Automatic |
If any of them is Stopped, right-click → Start. Then check the sound again.
3. Choose the correct audio output
An update can switch the output to a disconnected HDMI port. Go to Sound Settings and explicitly select “Speakers”, “Headphones”, or “Realtek Digital Output” according to your setup.
4. Reset audio components via PowerShell
Launch PowerShell as administrator and run:
Get-AppxPackage *windowscommunicationsapps* | Reset-AppxPackage
This sometimes fixes audio module issues at the UWP level. Then restart your machine.
5. Uninstall the latest update (extreme solution)
If all else fails, you can uninstall the update that caused the problem. Go to “Settings → Windows Update → Update history → Uninstall updates”. Select the KB related to audio and confirm. Warning, this method affects overall security.
In practice: real case and feedback
On a workstation equipped with Windows 11, audio suddenly stopped after installing update KB5006670. Device Manager showed no errors, but the volume icon was crossed out. After deploying the Realtek driver version 6.0.9101.1 (found on the manufacturer’s website), sound instantly returned. This case demonstrates the importance of the official source rather than Windows Update.
FAQ
- Why did the sound disappear after the update?
- Often due to a driver replaced by an incompatible version or a stopped Windows Audio service.
- How to quickly revert to a working driver?
- In Device Manager, choose “Roll back driver” if the option is available.
- Can I uninstall the faulty update?
- Yes, via Settings → Windows Update → History → Uninstall, but this may reduce the security level.
- What to do if the troubleshooter fixes nothing?
- Manually reinstall the driver from the manufacturer’s website and check the audio services.
