Audio

• Adjusting the Speakers Volume
• You can change the volume level of the speakers and headphones.
• Adjusting the Volume in Windows
• You can adjust the volume on each device and app from Control Panel.
• Changing the Sound Output Device
• If there is no sound coming from an external device connected to your VAIO computer, you need to change the device for sound output.
• Connecting a High-Quality Digital Sound Output Device between Your VAIO Computer and a TV
• You can connect a high-quality home theater receiver or other surround sound decoder devices between your VAIO computer and a TV using an HDMI connection.

You might be looking for the following topics:

• Connecting External Speakers/Headphones/Headset