Troubleshooting No Sounds Output

Press the Mute button on the keyboard to see if the Mute feature is turned on.
Or

1. Click the Windows Start Button, and then click Control Panel.
2. Click Hardware and Sound, and then Adjust system volume.
3. If applications are muted, click the mute button to unmute.

>> Click the task bar Volume icon, or use the keyboard controls to increasethe volume.
>> 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