HP ProBook 450 G4 Notebook PC and HP ProBook 455 G4 Notebook PC - Maintenance and Service Guide

Service door
Description Spare part number
Hard Drive Hardware Kit (includes service door) 905771-001
Before removing the service door, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
Remove the service door:
1. Loosen the captive Phillips screw (1).
2. Lift the bottom of the door upward (2), and then remove the door from the computer (3).
Reverse these procedures to install the service door.
Component replacement procedures 33