Source: steps rewritten in our own words (no more than 8 words in a row copied; part numbers, screw sizes and warnings kept as printed) from HP's Maintenance and Service Guide (PDF, printed pages 51). Not bench-tested. We have not performed this repair; keep HP's manual open for its illustrations. Scope restrictions below are part of the guide: do not apply it to other models, generations or configurations. Service manuals are written for trained technicians; work at your own risk.
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 EliteBook 840 G8. Confirm the exact model on the service label before starting.
HP EliteBook 840 G8 touchpad replacement. HP prints this procedure on printed page 51 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
M07106-001- Touchpad button board. Source: printed page 51.M42237-001- Touchpad. Source: printed page 51.M42238-001- Touchpad with NFC antenna. Source: printed page 51.M07101-001- Touchpad cable (included in Cable Kit). Source: printed page 51.
Preparation
Save your work, shut the computer down through the operating system, unplug AC power and every external device, and work on a grounded, static-safe surface.
Replacement
- Prepare the computer for disassembly and open the bottom cover so the touchpad is reachable. (printed page 51).
- Disconnect the touchpad cable from the system board and release the cable from its routing. (printed page 51).
- Undo the fasteners that hold the touchpad in the chassis and lift it out carefully. (printed page 51).
Parts this procedure uses
- HP cable M07101-001 (M07101-001)
Part numbers in our catalog
- HP touchpad M42237-001 (M42237-001)
- HP touchpad M42238-001 (M42238-001)
- HP Touchpad button board M07106-001 (M07106-001)
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-elitebook-840-g8-touchpad-replacement-p51