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 30–48). 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 Elite c640 14 inch G3 Chromebook. Confirm the exact model on the service label before starting.
HP Elite c640 14 inch G3 Chromebook™ system board replacement. HP prints this procedure on printed page 46 of its maintenance and service guide, and the spare-part table for this part is on printed page 13.
Tools and parts
- Screwdrivers and a non-marking pry tool as HP lists for this procedure
- Static-safe work surface
N13676-001- ● Intel Core i7-1265U processor and 16 GB of system memory. Source: printed page 46.N13674-001- ● Intel Core i5-1245U processor and 16 GB of system memory. Source: printed page 46.N13675-001- ● Intel Core i5-1245U processor and 8 GB of system memory. Source: printed page 46.N13672-001- ● Intel Core i5-1235U processor and 8 GB of system memory and 64 GB of eMMC storage. Source: printed page 46.N13673-001- ● Intel Core i5-1235U processor and 8 GB of system memory. Source: printed page 46.N13670-001- ● Intel Core i3-1215U processor and 8 GB of system memory and 64 GB of eMMC storage. Source: printed page 46.N13671-001- ● Intel Core i3-1215U processor and 8 GB of system memory. Source: printed page 46.N13677-001- ● Intel Pentium Gold 8505 processor and 8 GB of system memory and 64 GB of eMMC storage. Source: printed page 46.N13669-001- ● Intel Celeron 7305 processor and 8 GB of system memory and 64 GB of eMMC storage. Source: printed page 46.N20844-001- ● Intel Core i7-1265U processor and 16 GB of system memory. Source: printed page 46.N20842-001- ● Intel Core i5-1245U processor and 16 GB of system memory. Source: printed page 46.N20843-001- ● Intel Core i5-1245U processor and 8 GB of system memory. Source: printed page 46.N20841-001- ● Intel Core i5-1235U processor and 8 GB of system memory. Source: printed page 46.N20840-001- ● Intel Core i3-1215U processor and 8 GB of system memory. Source: printed page 46.N20845-001- ● Intel Pentium Gold 8505 processor and 8 GB of system memory and 64 GB of eMMC storage. Source: printed page 46.N20839-001- ● Intel Celeron 7305 processor and 8 GB of system memory and 64 GB of eMMC storage. Source: printed page 46.
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.
Replacement
- Get the machine ready for taking apart (the Preparation for disassembly section is on page 28). (printed page 30).
- Take the bottom cover off (the Bottom cover section is on page 28). (printed page 30).
- Take the battery out (the Battery section is on page 30). (printed page 38).
- Take the fan (the Fan section is on page 36). (printed page 46).
- Detach the parts listed below and leads from the main board: (printed page 46).
- Take the two Phillips M2.0 × 3.0 fasteners (1) from the bracket, and after that take the bracket (2). (printed page 47).
- Take the Mylar that covers the Phillips M2.0 × 2.5 fastener at the top of the main board, and after that take the fastener (3). (printed page 47).
- Take the two remaining Phillips M2.0 × 2.5 fasteners (4) that hold the main board to the machine. (printed page 47).
- Under the main board, free the USB leads from the machine chassis (5). (printed page 47).
- Lift the left side of main board (6), and after that pull the main board left and away from the connectors to lift it out from the machine (7). (printed page 47).
- To detach the USB leads from the main board, turn the board upside down, take the Mylar from the leads, and after that detach the leads shown in the following illustration. (printed page 48).
Parts this procedure uses
- HP Memory N13672-001 (N13672-001)
- HP Memory N13670-001 (N13670-001)
- HP Memory N13677-001 (N13677-001)
- HP Memory N13669-001 (N13669-001)
- HP Memory N20845-001 (N20845-001)
- HP Memory N20839-001 (N20839-001)
Part numbers in our catalog
- HP Motherboard N13675-001 (N13675-001)
- HP Motherboard N20843-001 (N20843-001)
- HP Motherboard N13671-001 (N13671-001)
- HP Motherboard N13673-001 (N13673-001)
- HP Motherboard N13674-001 (N13674-001)
- HP Motherboard N13676-001 (N13676-001)
- HP system board repair kit N19985-888 (N19985-888)
- HP Motherboard N20840-001 (N20840-001)
- HP Motherboard N20841-001 (N20841-001)
- HP Motherboard N20842-001 (N20842-001)
- HP Motherboard N20844-001 (N20844-001)
- HP Fingerprint reader board N12915-001 (N12915-001)
- HP System Board Repair Kit N14813-888 (N14813-888)
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-elite-c640-14-inch-g3-chromebook-system-board-replacement-p46