What should I do if I do not hear sound from speakers or headphones?
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Check if the volume from speakers or headphones is not minimized.
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Keep pressing the Fn+F4 keys to turn up the volume loud enough to hear sound. [Details]
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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.
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When connecting external speakers or headphones, check the following:
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Make sure external speakers or headphones are properly connected to your VAIO computer. [Details]
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If external speakers require external power, make sure the speakers are securely connected to an AC outlet.
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Make sure external speakers are turned on.
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Make sure the volume from external speakers is not minimized.
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Make sure the sound output device is correctly selected. [Details]
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Check the volume on the playback app you are using.