- Click the Windows Start Button, and then click Control Panel.
- Click Hardware and Sound, and then Adjust system volume.
- If applications are muted, click the mute button to unmute.
>> Ensure powered (active) speakers are turned on.
>> Turn off your computer, and reconnect the speakers.
>> Press the Sleep button (select models only), or press the Esc key on the keyboard to resume from sleep mode.
>> Replace the passive speaker system with an active speaker system (sold separately). Active speakers have a power cord and On button and connect to
the Audio Out (green) connector on the computer.
>> Unplug headphones if they are connected to your computer.
>> Codec error messages appear when certain audio files are played.
>> Open the file in Windows Media Player. Ensure Windows Media Player is configured to automatically download codecs.
>> If the correct codec is available, the file will play. Note that you must be
connected to the Internet to download the codec file.
>> If the correct codec is not available, check to see if there is an update available for Windows Media Player.
>> For more information, open Windows Media Player Help, and then search the online Help for codec.
>> Update Audio Windows Driver