Laptop Headphone Jack: firmware-disabled onboard audio. A supported low-level setting disables the onboard audio path that serves the jack.

The distinguishing clue

The wired endpoint and onboard audio controller are absent with a relevant disable setting present.

Checks before an assessment

Compare a known compatible wired headset at a moderate volume. Note whether the plug is detected and whether one channel, both channels or the microphone fails.

Stop point: Broken plug fragments should not be dug out with the battery connected.

Workshop confirmation and repair

Device-level check: Test a known headset, inspect the socket and compare detection across restart.

Targeted check: Confirm the model's supported audio setting before changing it. If confirmed: Restore the intended audio setting or diagnose the missing controller separately.

Repair boundary: Clean or replace the jack, or repair its sensing circuit after software routing is excluded.

Related cause to rule out

When speakers or HDMI play while the correctly inserted wired headset stays silent, also consider Laptop Headphone Jack: wired-headset output selection before choosing a repair.

Checks after the work

After repair or replacement, check both channels, microphone where supported, plug detection and movement.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.