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

Fix 'No audio output device is installed' error and missing sound on Windows caused by disabled devices, driver failures, and Windows Audio service issues. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: 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. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: 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). Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Right-click the speaker icon > Sound settings > check that an output device is selected and not muted. Device Manager > Sound, video and game controllers > right-click audio device > Enable device, or Update driver. Run services.msc > ensure 'Windows Audio' and 'Windows Audio Endpoint Builder' are Running and set to Automatic. Uninstall audio driver in Device Manager > Action > Scan for hardware changes to reinstall. Download manufacturer audio driver from laptop/motherboard maker's website (not generic Windows driver). If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Windows Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.