What should I do if I do not hear sound from speakers or headphones?

• Check if the volume from speakers or headphones is not minimized.

• Keep pressing the Fn+F4 keys to turn up the volume loud enough to hear sound. [Details]

• Check if the volume in Windows is not turned off or minimized. [Details]
  When the volume is turned off (), click (Deactivate muting) to turn on the volume (). When the volume is minimized, turn up the volume.

• When connecting external speakers or headphones, check the following:

• Make sure external speakers or headphones are properly connected to your VAIO computer. [Details]

• If external speakers require external power, make sure the speakers are securely connected to an AC outlet.

• Make sure external speakers are turned on.

• Make sure the volume from external speakers is not minimized.

• Make sure the sound output device is correctly selected. [Details]

• Check the volume on the playback software you are using.