HP ProBook 450 G4 fan replacement

Step-by-step HP ProBook 450 G4 fan replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you need905774-001HP fan for the HP ProBook 450 G4
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On this page
  1. Applies to
  2. tools and parts
  3. preparation
  4. replacement
  5. Part numbers in our catalog
  6. Manufacturer manual
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 66–71). 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 450 G4. Confirm the exact model on the service label before starting.

HP ProBook 450 G4 Notebook PC fan replacement. HP prints this procedure on printed page 70 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
  • 905774-001 - Fan computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist. These conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced through the ventilation grill located on the left side of the computer.. Source: printed page 70.

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.

  1. Place the machine upright on a flat surface. (printed page 66).

replacement

  1. Detach the fan lead (1) from the main board. (printed page 70).
  2. Take the lead out of the clip at the side of the fan (2). (printed page 70).
  3. Undo the Phillips PM2.5×7.0 fastener (3) that holds the fan to the machine. (printed page 70).
  4. Lift the fan from the machine (4). (printed page 71).
  5. Fit the replacement part by working back through the printed removal steps (printed page 71).

Part numbers in our catalog

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-450-g4-fan-replacement-p70

Key facts

HP document part number
903116-001
Model
HP ProBook 450 G4
Release year
2016
Screen size
15.6"
Printed pages
66–71

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