Labels: DOCUMENTED = taken from HP's manual; PROPOSED = our own joining or ordering of HP's directions, not an HP instruction; UNPERFORMED = a suggested check that has not been carried out.
Applies to
HP ProBook 440 G4. Confirm the exact model on the service label before starting.
HP ProBook 440 G4 Notebook PC power button board replacement. HP prints this procedure on printed page 55 of its maintenance and service guide.
tools and parts
- Screwdrivers and a non-marking pry tool as HP lists for this procedure
- Static-safe work surface
905712-001- Power button board assembly. Source: printed page 55.905707-001- Power button board cable (included in Cable Kit). Source: printed page 55.
preparation
Save your work and shut the computer down through the operating system, unplug AC power and every external device, and work on a clean, grounded, ESD-protected surface while sorting each screw by its original location. Handle every cable by its connector and put each one back in its own place during reassembly.
- Position the top cover upside-down. (printed page 53).
replacement
- Detach the lead from the connector on the board (1). (printed page 55).
- Take out the Phillips PM2.0×3.0 screw that holds the board to the top cover. (printed page 55).
- Lift the left side of the board (3) (printed page 55).
- If you need to replace the cable (printed page 56).
- Fit the replacement part by working back through the printed removal steps (printed page 56).
Parts this procedure uses
Part numbers in our catalog
- HP power button board (905712-001)
- HP function board (905710-001)
- HP USB/audio board (905713-001)
Check each part page for its source and variant notes before ordering.
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-probook-440-g4-power-button-board-replacement-p55