Windows 8 has a built-in tool specifically designed to find and fix common audio configuration errors. How to Fix Audio Problems on Windows 8 / Windows 8.1
Even if drivers are active, the background service that manages sound may have crashed or failed to start. Drivers Installed But No Sound Windows 8
Highlight your preferred speakers/headphones and click . 3. Run the Audio Troubleshooter Windows 8 has a built-in tool specifically designed
Right-click in the bottom-left corner of the screen and select . " and click Settings .
Windows might be trying to send audio to a disconnected monitor (HDMI) or a "ghost" device instead of your speakers.
Open the (point to the top-right corner), select Search , type "Sound," and click Settings .