Realtek Audio
Test Speakers
You can select the speaker by clicking it to test its functionality. The one you select will light up and make testing sound. If any speaker fails to make sound, then check whether the cable is inserted firmly to the connector or replace the bad speakers
with good ones. Or you may click the auto test 
button to test the sounds of each speaker automatically.
| Center |
Front Left | Front Right |
| |
| Side Right |
Side Left | Subwoofer |
| |
Rear Left | Rear Right |