HP EliteBook 840 G7 fan replacement (heat sink stays installed)

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 G7. Confirm the exact model on the service label before starting.

Service classification: Authorized Service Provider chapter; HP restricts access to authorized service providers because damage or warranty loss can result. HP manual, printed 43 / PDF 53

Scope: Complete supplied fan module; heat sink stays installed; no impeller/motor rebuild.

Applicability and parts

• Replace the complete documented fan module, retaining the installed heat sink and its thermal joint. No bare impeller/motor rebuilding or heat-sink replacement is covered.
• The fan table gives one fan spare for this manual; this does not establish serial-specific compatibility or a graphics conversion.

DOCUMENTED manual table options follow. A table entry is not serial-specific fit, present availability, upgrade approval or a shopping recommendation. Check the actual product/configuration before selecting a spare.

Tools and handling

• Nonconductive nonmarking case tool
• ESD protection and screw organizer
• Phillips P1 driver

The model-specific preparation and handling citations are included in the first step. Use the correct driver for the actual head. Do not borrow screw, Battery Safe, keyboard-cable or memory-slot rules from another HP model.

Ordered procedure

DOCUMENTED steps paraphrase HP. Reassembly expands HP’s reverse-procedure directions. Any combined order identified as PROPOSED is our own synthesis of those directions, not a separate HP or bench-verified instruction. No numeric torque or unprovided latch motion is added.

1. Prepare. Confirm the exact model/product label and matching replacement configuration before opening. Shut down through the operating system (wake and shut down if uncertain about sleep/hibernation); unplug external devices and AC power. Work on a clean ESD-protected surface with grounded handling precautions; handle boards/modules by edges, keep liquids away, and sort screws by original location. Do not bend, crush, puncture or use a sharp tool against a battery. Stop for a swollen/damaged pack or a hardware/connector mismatch. (DOCUMENTED) HP manual, printed 33 / PDF 43; HP manual, printed 28 / PDF 38; HP manual, printed 29 / PDF 39; HP manual, printed 30 / PDF 40; HP manual, printed 31 / PDF 41; HP manual, printed 32 / PDF 42
2. Access. With the closed computer supported upside down, loosen five captive Phillips screws. Start releasing the cover near the hinges with a thin nonconductive nonmarking tool, then lift it off. Keep each fastener at its original location; do not detach captive screws. (DOCUMENTED) HP manual, printed 33 / PDF 43; HP manual, printed 34 / PDF 44
3. Isolate. Lift the tape covering the battery connector, then disconnect the battery cable from the system board. Keep the tape for restoration. Leave the battery installed; no battery screws or inter-speaker cable removal is required for this fan route. (DOCUMENTED) HP manual, printed 43 / PDF 53; HP manual, printed 44 / PDF 54; HP manual, printed 54 / PDF 64
4. Remove. Record the original side routing, then release the cables from the clips on the side of the fan. Disconnect the fan cable from the system board. Loosen the three captive Phillips fan screws and lift out the fan assembly. The manual does not give their dimensions. Keep the heat sink installed; WLAN antenna terminals and card need not be disconnected for this route. (DOCUMENTED) HP manual, printed 54 / PDF 64
5. Install. Seat the matching fan assembly, secure its three captive Phillips screws and reconnect its cable. Return every displaced side cable to the original fan clips, with no pinching or contact with the fan. No torque or tightening sequence is supplied. (DOCUMENTED reverse-procedure direction) HP manual, printed 54 / PDF 64
6. Restore. With the fan fastened and its cables restored, reconnect the battery cable and restore the connector tape. Check that nothing is pinched. (PROPOSED combined reassembly order, using OEM reverse direction) HP manual, printed 43 / PDF 53; HP manual, printed 44 / PDF 54; HP manual, printed 54 / PDF 64
7. Close. Check that every cable is seated and routed clear of the cover and that no screw/tool remains inside. Refit and seat the bottom cover, engaging its clips; restore five captive Phillips screws to their original holes. No numerical torque is supplied here. (PROPOSED combined reassembly order, following OEM reverse-procedure directions) HP manual, printed 33 / PDF 43; HP manual, printed 34 / PDF 44

Heat-sink and thermal-material boundary

Do not lift the heat sink during this guide. The separate heat-sink section specifies M07204-001; four captive heat-sink screws and CPU/mating surface paste. If a thermal joint is disturbed, stop this fan-only guide and follow the correct separate OEM heat-sink procedure and its matching replacement-material kit/instructions. Clean and renew specified material each time that joint is opened. This guide does not supply pad thickness, paste quantity, torque or an invented tightening pattern. Preserve stamped removal order where specified; do not infer a new installation sequence. HP manual, printed 54 / PDF 64; HP manual, printed 55 / PDF 65; HP manual, printed 56 / PDF 66

Proposed checks — all unperformed

• UNPERFORMED: after full reassembly, power on and check for firmware fan/startup errors, abnormal rubbing/noise and unobstructed vents.
• UNPERFORMED: use available HP diagnostics and observe temperature/fan behavior during ordinary operation. A temperature-controlled fan need not spin immediately at boot; this is not a benchmark or cooling-performance certification. Shut down if a fan error, abnormal heat or mechanical interference appears; isolate power before reopening.

Part numbers in our catalog

• HP cooling fan M07102-001 (M07102-001)

Check each part page for its source and variant notes before ordering.

Official manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-840-g7-fan-assembly-replacement