Windows might be trying to send audio to a disconnected monitor (HDMI) or a "ghost" device instead of your speakers.
If your speakers appear as disabled, right-click them and select . Drivers Installed But No Sound Windows 8
Open the (point to the top-right corner), select Search , type "Sound," and click Settings . Windows might be trying to send audio to
Highlight your preferred speakers/headphones and click . 3. Run the Audio Troubleshooter Drivers Installed But No Sound Windows 8
Even if drivers are active, the background service that manages sound may have crashed or failed to start.
If your audio drivers are installed but you still have no sound in Windows 8, the issue is often caused by a stalled system service or incorrect playback settings. 1. Restart the Windows Audio Service