Audio Output Device Not Found
What is this error?
Windows shows 'No audio output device is installed' or the audio device disappears from the system, especially after sleep/wake or driver updates.
Common causes
- audio driver crashed or uninstalled
- Windows update replaced audio driver
- HDMI/DisplayPort audio conflict
- audio service stopped
- USB audio device disconnected during sleep
How to fix it
- Reinstall audio driver
- restart Windows Audio service
- check Device Manager for hidden devices
- update driver from manufacturer
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
'No Audio Output Device is installed' — your headset or speakers vanished from Windows. This commonly happens after Windows updates, sleep/wake cycles, or GPU driver installations (which add HDMI audio).
How to fix it:
- Open Device Manager > View > Show Hidden Devices > Sound, video and game controllers. If your device appears greyed out, right-click > Enable or Uninstall then scan for hardware changes
- Restart Windows Audio service: Services (services.msc) > Windows Audio > Restart. Also restart 'Windows Audio Endpoint Builder'
- Install the audio driver from your motherboard manufacturer (for Realtek) or headset manufacturer — NOT from Windows Update
- If audio disappeared after a GPU driver update: the NVIDIA/AMD audio driver may have changed your default output. Check Sound Settings for the correct device
- For USB headsets: unplug, wait 10 seconds, replug into a different USB port
- Run the Windows Audio troubleshooter: Settings > System > Troubleshoot > Other troubleshooters > Playing Audio
- Disable and re-enable the audio device in Device Manager
- If using HDMI/DisplayPort audio from GPU: make sure the correct display audio is set as default
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
Or let Crashless do the deep analysis for you -- our AI checks drivers, temps, event logs, and 400+ known patterns automatically.
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