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

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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 ( ), select (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 app you are using.
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