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No Audio Output Device — Windows Sound Not Working and Driver Issues

Warningdriver

Overview

Fix 'No audio output device is installed' error and missing sound on Windows caused by disabled devices, driver failures, and Windows Audio service issues.

Key Details

  • The 'No audio output device is installed' error shows a red X on the speaker icon in the taskbar
  • Audio devices may be disabled, unplugged, or have corrupted drivers
  • Windows Audio and Windows Audio Endpoint Builder services must be running
  • HDMI audio output may conflict with the primary audio device selection
  • Windows Update can replace working audio drivers with generic ones that do not support all features

Common Causes

  • Audio driver corrupted or removed by a Windows Update
  • Audio device disabled in Sound settings or Device Manager
  • Windows Audio service not running or set to Manual instead of Automatic
  • BIOS setting disabling onboard audio (common after BIOS update or reset)

Steps

  1. 1Right-click the speaker icon > Sound settings > check that an output device is selected and not muted
  2. 2Device Manager > Sound, video and game controllers > right-click audio device > Enable device, or Update driver
  3. 3Run services.msc > ensure 'Windows Audio' and 'Windows Audio Endpoint Builder' are Running and set to Automatic
  4. 4Uninstall audio driver in Device Manager > Action > Scan for hardware changes to reinstall
  5. 5Download manufacturer audio driver from laptop/motherboard maker's website (not generic Windows driver)

Tags

audiono-sounddriveroutput-devicesound

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windows-bluetooth-pairing-failed

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Frequently Asked Questions

Windows Update sometimes replaces manufacturer audio drivers with generic Microsoft drivers. Download the correct driver from your laptop or motherboard manufacturer's support page.