To Next Page

To Previous Page

3. Lift the system board (4), and then remove it (5).

Reverse this procedure to install the system board.

Fan and heat sink assembly

Description Spare part number

Fan and heat sink assembly

For 14" products with integrated graphics 840662-001

For 14" products with discrete graphics 840663-001

For 15" products with integrated graphics 840732-001

For 15" products with high-quality integrated graphics 840734-001

For 15" products with discrete graphics 840733-001

IMPORTANT: Make special note of each screw and screw lock size and location during removal and

replacement

Before removing the fan and heat sink, follow these steps:

1. Shut down the computer.

2. Disconnect all external devices connected to the computer.

3. 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.

4. Remove the following components:

Component replacement procedures 61

Questions and Answers:

Need help?

Do you have a question about the HP ProBook 645 G2 and is the answer not in the manual?

HP ProBook 645 G2 Specifications

General

Form factor	Clamshell
Product type	Laptop
Product color	Black, Silver
Country of origin	China
Memory slots	2x SO-DIMM
Internal memory	8 GB
Memory clock speed	1600 MHz
Memory form factor	SO-DIMM
Internal memory type	DDR3L-SDRAM
Maximum internal memory	16 GB
Memory layout (slots x size)	1 x 8 GB
LED backlight	Yes
Display surface	Matt
Display diagonal	14 \
Native aspect ratio	16:9
Intel segment tagging	Enterprise
SSD capacity	The Solid State Drive's storage capacity in Gigabytes.
Storage media	SSD
Optical drive type	DVD Super Multi
Total storage capacity	256 GB
Compatible memory cards	SD, SDHC, SDXC
Number of SSDs installed	1
Discrete graphics card model	Not available
On-board graphics card model	AMD Radeon R6
On-board graphics card base frequency	800 MHz
Number of built-in speakers	2
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n), 802.11a, Wi-Fi 5 (802.11ac)
Bluetooth version	4.2
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Charging port type	DC-in jack
USB 2.0 ports quantity	0
Battery capacity	48 Wh
Number of battery cells	3
Pointing device	Touchpad
Operating system architecture	64-bit
Processor cache	2 MB
Processor cores	4
Processor family	AMD PRO A10
Processor frequency	1.8 GHz
Processor cache type	L2
Processor manufacturer	AMD
Processor boost frequency	3.2 GHz
AC adapter power	65 W