Dell Inspiron 16 7640 Intel Core Ultra 5 125H HDMI Audio Not Working Fix Windows 11
Dell Inspiron 16 7640 — HDMI Audio Not Working
Why it happens
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Windows 11 update reset the default audio output device from HDMI back to built-in speakers
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Intel Iris Xe Graphics driver not registering the HDMI audio endpoint after a driver update
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TV is in standby mode — the HDMI audio device only shows in Windows when the TV is on
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Faulty or low-quality HDMI cable not carrying the audio data channel reliably
How to fix
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Turn on the TV, set it to the correct HDMI input, then right-click speaker icon → Sound settings → Output → select the HDMI device
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Update Intel Iris Xe Graphics driver from Dell Support for Inspiron 16 7640 to restore the HDMI audio endpoint
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Show disabled devices in Sound settings: right-click in the output list → Show disabled devices → enable the HDMI output if it appears greyed out
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Replace the HDMI cable with a certified HDMI 2.0 cable if video works but audio does not
“Turning on the TV and selecting the HDMI device in Sound settings fixed the no-audio issue on my Inspiron 16 7640 immediately.” — Roslan, Kluang
About the Author Ryan holds a Computer Science degree and has spent over 15 years troubleshooting Windows hardware and driver issues across major laptop brands. He writes practical, step-by-step guides for everyday users at softwaredriverdownload.com.
Frequently Asked Questions
Why is HDMI audio not working on Dell Inspiron 16 7640?
The Dell Inspiron 16 7640 routes HDMI audio through the Intel Iris Xe Graphics driver. After a Windows 11 update, the audio output device may switch away from the HDMI target. Selecting the correct HDMI output device in Sound settings restores audio.
How do I set HDMI as the audio output on Dell Inspiron 16 7640?
Right-click the speaker icon in the taskbar → Sound settings → Output dropdown → select your TV or monitor listed as HDMI. If it is not listed, the Intel display driver needs updating to enable the HDMI audio endpoint.
Does the TV need to be on for HDMI audio to work on Inspiron 16 7640?
Yes. The HDMI audio device only appears in Windows 11 Sound settings when the connected TV or monitor is powered on and showing the HDMI input. If the TV is on standby, the HDMI audio output will not be listed.
Can a bad HDMI cable cause no audio on Dell Inspiron 16 7640?
Yes. HDMI cables that are damaged or not rated for the resolution being used can fail to carry the audio channel even when video works correctly. Try a different HDMI cable, preferably HDMI 2.0 or 2.1 certified.
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