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 37). 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 ProBook 455 G9. Confirm the exact model on the service label before starting.
HP ProBook 455 G9 bottom cover replacement. HP prints this procedure on printed page 37 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
N00121-001- Bottom cover for use in models with a 51 Wh battery. Source: printed page 37.M21720-001- Bottom cover for use in models with a 42 Wh battery. Source: printed page 37.
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
- Shut the machine down, unplug the mains lead and disconnect every peripheral. (printed page 37).
- Undo the captive screws that hold the base cover in place. (printed page 37).
- Work a non-marring tool around the rim to release the cover, then lift it away. (printed page 37).
Part numbers in our catalog
- HP bottom cover (base enclosure) N00121-001 (N00121-001)
- HP bottom cover (base enclosure) M21720-001 (M21720-001)
- HP bottom cover L15814-001 (L15814-001)
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-455-g9-bottom-cover-replacement-p37