HP EliteBook 645 User Manual

Maintenance and Service Guide
HP EliteBook 645 14 inch G11 Notebook PC
SUMMARY
This guide provides maintenance information about such topics as spare parts, removal and replacement of
parts, security, and backing up.

HP EliteBook 645 Specifications

General

Display	14-inch, 1920 x 1080, IPS
Storage	256 GB SSD
Graphics	AMD Radeon Graphics
Operating System	Windows 11 Pro
Weight	1.37 kg
Ports	2 x USB-C, 2 x USB
Wireless	Wi-Fi 6, Bluetooth 5.2
Battery	3-cell, 42 Wh Li-ion

Summary

Components

Right and Left Side Components

Identifies and describes components on the right and left sides of the computer, including ports and slots.

Keyboard, Touchpad, and Special Keys

Explains the keyboard area, touchpad settings, components, and special keys.

Illustrated Parts Catalog

Major Computer Components and Part Numbers

Display Assembly Subcomponents

Removal and Replacement Procedures (Preliminary Requirements)

Tools, Service Considerations, and ESD Prevention

Covers necessary tools, service considerations, and electrostatic discharge prevention methods.

Accessing Support Information

Removal and Replacement Procedures (Customer Self-Repair)

Disassembly Preparation and Bottom Cover Removal

Steps to prepare the computer for disassembly and remove the bottom cover.

SIM Card and Memory Module Replacement

WLAN, WWAN, and Solid-State Drive Replacement

Procedures for replacing wireless modules (WLAN/WWAN) and the solid-state drive (SSD).

Removal and Replacement Procedures (Authorized Service Provider)

Preparation and Battery Replacement

Steps to prepare for disassembly and replace the computer battery.

Speaker, Fingerprint Reader, Fan, and I/O Board Replacement

NFC, Smart Card Reader, Touchpad, and Heat Sink Replacement

System Board and Display Assembly Replacement

Procedures for replacing the system board and disassembling the display assembly.

Top Cover with Keyboard Replacement

Backing Up, Restoring, and Recovering

Data Backup and Recovery Media Creation

System Restore and Recovery Methods

Outlines primary methods for restoring and recovering the system using various tools.

Computer Setup (BIOS), TPM, and HP Sure Start

Using Computer Setup (BIOS) and Updates

Introduction to BIOS, navigation, and procedures for updating and restoring BIOS settings.

TPM and HP Sure Start Security Features

Using HP PC Hardware Diagnostics

Windows and UEFI Hardware Diagnostics

How to use Windows and UEFI diagnostic tools for hardware checks and failure ID codes.

Downloading and Installing Diagnostics Tools

Specifications