Having no sound is quite common, annoying and often easy to fix.
The most common causes are :
- Cables disconnected or incorrectly connected
- Speakers turned off or not connected
- Sound muted or turned down very low
- Your sound system is not set-up correctly and needs to be reinstalled
Check your cables and settings carefully. If that doesn’t help try using a set of headphones in the sound socket to see if sound is available. Play a MP3 track or CD to test.