Laptop Power Button Board: incorrect replacement part. The fitted module uses a different layout, firmware or pin assignment.

The distinguishing clue

Button response becomes incorrect or incomplete immediately after the power button is replaced.

Checks before an assessment

Record the button feel and any lights already observed after a normal press. Do not bridge contacts or press repeatedly when the button or case is damaged.

Stop point: Shorting random board pads to start a laptop can cause damage.

Workshop confirmation and repair

Device-level check: Compare charger and board power signs, then inspect the button, cable and connector with the battery isolated.

Targeted check: Compare original part numbers and supported options. If confirmed: Install the exact compatible part and retest all functions.

Repair boundary: Replace the button board or cable only after standby power and motherboard response are confirmed.

Related cause to rule out

When the button starts the laptop from off but performs the wrong action inside Windows, also consider Laptop Power Button Board: power-button action setting before choosing a repair.

Checks after the work

After repair or replacement, check cold start, restart, shutdown, button feel and repeated presses.

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