RE: Dell S2415H 24" Monitor Built In Speakers Not Working
From the computer green audio out jack, plug an RCA cable in it, the other end plugs into the S2415H audio Line-In port. Set the computer audio playback to Speakers Realtek. Test both the S2415H speakers and its headphone out jack.
I would also test the S2415H on another computer to see if the "no audio" issue follows the S2415H.
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Run the PC pre-Windows diagnostics
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