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No Sound on Windows 7? Complete Troubleshooting Guide (Also Works for Windows 10 & 11) Have you ever clicked Play on a video or song only to discover your computer is completely silent? Audio problems are among the most common Windows issues. Fortunately, most "no sound" problems can be fixed within a few minutes without reinstalling Windows. Whether your PC suddenly lost sound after a Windows update, a driver installation, or simply stopped working without warning, this guide walks you through every possible solution—from quick fixes to advanced troubleshooting. Although this guide focuses primarily on Windows 7, nearly all of the solutions also apply to Windows 10 and Windows 11. Table of Contents Quick Fix Checklist Check Speakers and Hardware Select the Correct Playback Device Check Windows Volume Mixer Restart Your Computer Change Audio Format Reinstall Audio Drivers Update Sound Drivers Run Windows Audio Troubleshooter Restart Windows Audio Services Fix Device Manag...