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 41–66). 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 640 G10. Confirm the exact model on the service label before starting.
HP EliteBook 640 14 inch G10 heat sink replacement. HP prints the spare part table for this procedure on printed page 57.
Tools and parts
- Tweezers, a pry tool that neither conducts nor marks and a magnetic Phillips P1 driver
- Static-safe work surface
N03345-001- Models with UMA graphics memory. Source: printed page 57.N03344-001- Models with discrete graphics memory. Source: printed page 57.N15764-001- Models with a 28 W processor. Source: printed page 57.
Preparation
HP prints its tools list and its handling and electrostatic-discharge cautions on printed page 30. Its preparation for disassembly is on printed page 39: power the unit down through the operating system, unplug the power cord and detach every external device before opening it. Work on a grounded, static-safe surface, keep screws grouped by the position they came from, and handle boards and modules by their edges.
Replacement
- Get the computer ready for disassembly (see that procedure on page 39). (printed page 41).
- Take off the bottom cover (see that procedure on page 39). (printed page 41).
- Detach the battery cable from the system board (see that procedure on page 48). (printed page 41).
- (UMA models) In the order indicated on the cooler, loosen the four captive Phillips screws that (printed page 57).
- Take out the heat sink from the computer (2). (printed page 58).
- (Discrete models) In the order indicated on the cooler, loosen the six captive Phillips screws (printed page 58).
- Take out the heat sink from the computer (2). (printed page 58).
- Wipe the old compound off the heat sink and main board faces components each time the heat sink is removed. (printed page 58).
- Get the computer ready for disassembly (see that procedure on page 39). (printed page 41).
- Take off the bottom cover (see that procedure on page 39). (printed page 41).
- Take off the battery (see that procedure on page 48). (printed page 52).
- Take off the fan (see that procedure on page 55). (printed page 60).
- Detach the following cables from the system board: (printed page 61).
- Take out the port bracket by removing the three Phillips M2.5 × 4.0 screws that hold the (printed page 62).
- Take out the two Phillips M2.0 × 2.5 screws that hold the system board to the computer. (printed page 62).
- Lift the side of the main board upward (5), and after that pull the main board away from the connectors at the side of the machine to lift it out (6). (printed page 62).
- Get the computer ready for disassembly (see that procedure on page 39). (printed page 41).
- Take off the bottom cover (see that procedure on page 39). (printed page 41).
- Take off the battery (see that procedure on page 48). (printed page 52).
- Take off the fan (see that procedure on page 55). (printed page 60).
- Take out the system board (see that procedure on page 59). (printed page 63).
- Take out the Phillips M2.0 × 2.0 screw that holds the speaker to the computer. (printed page 63).
- Lift the speaker up (printed page 63).
- Get the computer ready for disassembly (see that procedure on page 39). (printed page 41).
- Take off the bottom cover (see that procedure on page 39). (printed page 41).
- Detach the battery cable from the system board (see that procedure on page 48). (printed page 41).
- Move the antenna cables (printed page 64).
- Take out the three Phillips M2.5 × 4.0 screws that hold the right display hinge to the computer, (printed page 64).
- Detach the cable from the system board. (printed page 64).
- Take out the power connector cable from the computer (5). (printed page 64).
- Get the computer ready for disassembly (see that procedure on page 39). (printed page 41).
- Take off the bottom cover (see that procedure on page 39). (printed page 41).
- Detach the battery cable from the system board (see that procedure on page 48). (printed page 41).
- Take out the power connector cable (see that procedure on page 63). (printed page 65).
- Detach the display cable (1) (printed page 65).
- Detach the antenna cables from the WLAN module. (printed page 65).
- (Select models only) Detach the antenna cables from the WWAN module, and then remove (printed page 65).
- Take out the five Phillips M2.5 × 4.0 screws that hold the display assembly to the computer. (printed page 65).
- Rotate the display to open the hinges (2). (printed page 65).
- Separate the display assembly from the computer (3). (printed page 66).
- To remove the bezel: (printed page 66).
Part numbers in our catalog
- HP heat sink N03345-001 (N03345-001)
- HP heat sink N03344-001 (N03344-001)
- HP heat sink N15764-001 (N15764-001)
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-640-14-inch-g10-heat-sink-replacement-p57