HP ProBook 640 G1, 645 G1, 650 G1, and 655 G1 Notebook PCs - Maintenance and Service Guide
Table Of Contents
- Product description
- External component identification
- Illustrated parts catalog
- Removal and replacement procedures preliminary requirements
- Removal and replacement procedures for Customer Self-Repair parts
- Removal and replacement procedures for Authorized Service Provider parts
- Computer Setup (BIOS), TPM, and HP Sure Start – Windows 10
- Using HP PC Hardware Diagnostics (UEFI) – Windows 10
- Computer Setup
- Windows 8 — Computer Setup (BIOS), MultiBoot, and System Diagnostics
- Windows 7 — Computer Setup (BIOS), MultiBoot, and HP PC Hardware Diagnostics (UEFI)
- Specifications
- Backup and recovery – Windows 10
- Backup and recovery
- Statement of Volatility
- Power cord set requirements
- Recycling
- Index
Description Spare part number
4-GB (PC3L, 12800, 1600) 691740-001
2-GB (PC3L, 12800, 1600) 691739-001
To add or replace a memory module:
1. Save your work and shut down the computer.
2. Disconnect AC power and external devices connected to the computer.
3. Remove the battery (see Battery on page 56).
4. Remove the service cover (see Service cover on page 57).
5. If you are replacing a memory module, remove the existing memory module:
a. Pull away the retention clips (1) on each side of the memory module.
The memory module tilts up.
b. Grasp the edge of the memory module (2), and then gently pull the memory module out of the
memory module slot.
CAUTION: To prevent damage to the memory module, hold the memory module by the edges
only. Do not touch the components on the memory module.
To protect a memory module after removal, place it in an electrostatic-safe container.
Reverse this procedure to install a memory module.
Component replacement procedures 63