HP EliteBook 755 G4, EliteBook 745 G4 Maintenance and Service Guide

HP EliteBook 755 G4 Notebook PC HP EliteBook 745 G4 Notebook PC

Maintenance and Service Guide

© Copyright 2016 HP Development Company,

L.P.

AMD and AMD Radeon are trademarks of Advanced Micro Devices, Inc. Bluetooth is a trademark owned by its proprietor and used by HP Inc. under license. Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

Product notice

This guide describes features that are common to most models. Some features may not be available on your computer.

Not all features are available in all editions of Windows 10 or Windows 8. This computer may require upgraded and/or separately purchased hardware, drivers and/or software to take full advantage of Windows 10 or Windows 8 functionality. See http://www.microsoft.com for details.

The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

First Edition: December 2016

Document Part Number: 902206-001

Important Notice about Customer Self-Repair Parts

CAUTION: Your computer includes Customer Self-Repair parts and parts that should only be accessed by an authorized service provider. See Chapter 5, "Removal and replacement procedures for Customer Self-Repair parts," for details. Accessing parts described in Chapter 6, "Removal and replacement procedures for Authorized Service Provider only parts," can damage the computer or void your warranty.

iii

iv Important Notice about Customer Self-Repair Parts

Safety warning notice

WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place the device directly on your lap or obstruct the device air vents. Use the device only on a hard, at surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block air ow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing, during operation. The device and the AC adapter comply with the user-accessible surface temperature limits de ned by the International Standard for Safety of Information Technology Equipment (IEC 60950-1).

v

vi Safety warning notice

Table of contents

1 Product description .......................................................................................................................................	1
2 External component dent c t on ..................................................................................................................	6
Right .......................................................................................................................................................................	6
Left .........................................................................................................................................................................	8
Display ....................................................................................................................................................................	9
Top ........................................................................................................................................................................	10
TouchPad ...........................................................................................................................................	10
Lights .................................................................................................................................................	11
Buttons, speakers, and ngerprint reader ........................................................................................	14
Special function keys ........................................................................................................................	16
Using the hot keys .............................................................................................................................	17
Bottom .................................................................................................................................................................	19
Front .....................................................................................................................................................................	20
Locating system information ..............................................................................................................................	20
3 Illustrated parts catalog ..............................................................................................................................	22
Computer major components ..............................................................................................................................	22
Display assembly subcomponents ......................................................................................................................	25
Plastics kit ............................................................................................................................................................	26
Mass storage devices ...........................................................................................................................................	27
Miscellaneous parts .............................................................................................................................................	28
4 Removal and replacement procedures preliminary requirements ....................................................................	30
Tools required ......................................................................................................................................................	30
Service considerations .........................................................................................................................................	30
Plastic parts .......................................................................................................................................	30
Cables and connectors ......................................................................................................................	31
Drive handling ...................................................................................................................................	31
Grounding guidelines ...........................................................................................................................................	32
Electrostatic discharge damage ........................................................................................................	32
Packaging and transporting guidelines ..........................................................................	33
Workstation guidelines ...................................................................................................	33
Equipment guidelines .....................................................................................................	34

vii

5 Removal and replacement procedures for Customer Self-Repair parts .............................................................	35
Component replacement procedures ..................................................................................................................	35
Bottom cover .....................................................................................................................................	35
Battery ...............................................................................................................................................	40
Hard drive ..........................................................................................................................................	41
SSD .....................................................................................................................................................	43
Memory modules ...............................................................................................................................	44
WLAN/Bluetooth combo card ............................................................................................................	46
WWAN module ...................................................................................................................................	48
Keyboard ...........................................................................................................................................	50
6 Removal and replacement procedures for Authorized Service Provider parts ...................................................	53
Component replacement procedures ..................................................................................................................	53
RTC battery ........................................................................................................................................	54
Internal base plate ............................................................................................................................	55
Heat sink/fan assembly ....................................................................................................................	58
Fingerprint reader assembly .............................................................................................................	61
Power button board ..........................................................................................................................	62
Touchpad button board .....................................................................................................................	65
NFC module .......................................................................................................................................	67
Smart card reader board ...................................................................................................................	68
USB/VGA board ..................................................................................................................................	70
System board ....................................................................................................................................	71
Speaker assembly .............................................................................................................................	74
Display assembly ...............................................................................................................................	76
Top cover ...........................................................................................................................................	81
7 Computer Setup (BIOS), TPM, and HP Sure Start in Windows 10 ........................................................................	82
Using Computer Setup .........................................................................................................................................	82
Starting Computer Setup ..................................................................................................................	82
Navigating and selecting in Computer Setup ...................................................................................	82
Restoring factory settings in Computer Setup .................................................................................	82
Updating the BIOS .............................................................................................................................	83
Determining the BIOS version .........................................................................................	83
Downloading a BIOS update ...........................................................................................	84
Changing the boot order using the f9 prompt ..................................................................................	84
TPM BIOS settings (select products only) ...........................................................................................................	85
Using HP Sure Start (select products only) .........................................................................................................	85

viii

8 Computer Setup (BIOS), TPM, and HP Sure Start in Windows 7 .........................................................................	86
Using Computer Setup .........................................................................................................................................	86
Starting Computer Setup ..................................................................................................................	86
Navigating and selecting in Computer Setup ...................................................................................	86
Restoring factory settings in Computer Setup .................................................................................	87
Updating the BIOS .............................................................................................................................	88
Determining the BIOS version .........................................................................................	88
Downloading a BIOS update ...........................................................................................	88
Changing the boot order using the f9 prompt ..................................................................................	89
TPM BIOS settings (select products only) ...........................................................................................................	89
Using HP Sure Start (select products only) .........................................................................................................	90
9 Using HP PC Hardware Diagnostics (UEFI) .......................................................................................................	91
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device ....................................................................	91
10 Backing up and recovering Windows 10 .......................................................................................................	93
Creating recovery media and backups ................................................................................................................	93
Creating HP Recovery media (select products only) .........................................................................	93
Using Windows tools ...........................................................................................................................................	94
Restore and recovery ...........................................................................................................................................	95
Recovering using HP Recovery Manager ...........................................................................................	95
What you need to know before you get started .............................................................	95
Using the HP Recovery partition (select products only) .................................................	96
Using HP Recovery media to recover ..............................................................................	96
Changing the computer boot order ................................................................................	97
Removing the HP Recovery partition (select products only) .........................................	98
11 Backing up and recovering Windows 7 .........................................................................................................	99
Creating recovery media and backups ................................................................................................................	99
Guidelines ..........................................................................................................................................	99
Creating recovery media with HP Recovery Disc Creator .................................................................	99
Creating recovery media ...............................................................................................	100
Backing up your information ..........................................................................................................	100
Performing a system recovery ..........................................................................................................................	101
Using the Windows recovery tools ..................................................................................................	101
Using f11 recovery tools (select models only) ...............................................................................	102
Using Windows 7 operating system media .....................................................................................	102
12 pec c t ons ..........................................................................................................................................	104
Input power ........................................................................................................................................................	104

ix

	Operating environment .....................................................................................................................................	104
13	Power cord set requirements ....................................................................................................................	105
	Requirements for all countries ..........................................................................................................................	105
	Requirements for speci c countries and regions .............................................................................................	105
14	Statement of memory volatility ................................................................................................................	107
	Nonvolatile memory usage ...............................................................................................................................	109
	Questions and answers .....................................................................................................................................	111
	Using HP Sure Start (select models only) ..........................................................................................................	112
15	Recycling ................................................................................................................................................	113
Index ...........................................................................................................................................................		114

x

1Product description

Category	Description
Product Name	HP 755 G4 Notebook PC
	HP 745 G4 Notebook PC
Processors	AMD® processors:
	● A12 Pro-9800B 2.7 GHz (max turbo frequency 3.6 GHz), DDR4-1866, 2 MB L2 Cache, 15 W
	● A12 Pro-8830B 2.1 GHz (max turbo frequency 3.4 GHz), DDR4-1866, 2 MB L2 Cache, 15 W
	● A10 Pro-8730B 1.8 GHz (max turbo frequency 3.2 GHz), DDR4-1866, 2 MB L2 Cache, 15 W
	● A8 Pro-9600B 2.4 GHz (max turbo frequency 3.3 GHz), DDR4-1866, 2 MB L2 Cache, 15 W
Chipset	Integrated with processor
Graphics	Internal graphics:
	AMD UMA graphics (with shared video memory)
	AMD Vivid Color Support
	Dual-display ports supported through docking solution
	Up to three independent displays supported with docking solution
	AMD Radeon R7 (A12 Pro-9800B, A12 Pro-8830B)
	AMD Radeon R5 (A10 Pro-8730B, A8 Pro-9600B)
Panel	39.6-cm (15.6-in), eDP 1.2 slim, high-de nition (HD), AntiGlare (AG), SVA (1366 x 768) display with and
	without webcam
	39.6-cm (15.6-in), eDP 1.2 slim, full high-de	nition (FHD), AntiGlare (AG), SVA (1920 x 1080) display with and
	without webcam
	39.6-cm (15.6-in), eDP 1.2 slim, full high-de	nition (FHD), SVA (1920 x 1080) display with touch and webcam
	35.6-cm (14-in), eDP 1.2 slim, high-de nition (HD), AntiGlare (AG), SVA (1366 x 768) display with and without
	webcam
	35.6-cm (14-in), eDP 1.2 slim, full high-de nition (FHD), AntiGlare (AG), SVA (1920 x 1080) display with and
	without webcam
	35.6-cm (14-in), eDP + PSR ultraslim, quarter high-de nition (QHD), AntiGlare (AG), UWVA (2560 x 1440)
	display with and without webcam
	35.6-cm (14-in), eDP 1.2 slim, full high-de nition (FHD), SVA (1920 x 1080) display with touch and webcam
	All display assemblies include two wireless local area network (WLAN) antenna cables and NFC antenna
	WWAN models include two wireless wide area network (WWAN) antenna cables
Memory	Two memory module slots
	Memory is customer accessible.
	DDR3L -12800 (1600 MHz) dual channel support
	DDR4 PC4 (1866 MHz) support
	Supports up to 16 GB of system RAM

1

Category	Description
	●	16384 MB (8192 MB×2)
	●	12288 MB (8192 MB + 4096 MB) (not available in Brazil on the 35.6-cm)
	●	8192 MB (8192 MB×1 or 4096 MB×2)
	●	4096 MB (4096 MB×1)
Hard drive	HDDs:
	Supports 6.35 cm (2.5 in) hard drives in 7.0 mm (.28 in) thicknesses (all hard drives use the same bracket)
	Serial ATA
	●	1 TB, 5400 rpm, 6.35 mm
	●	500 GB, 7200 rpm, 6.35 mm, self-encrypting (FIPS-140-2)
	●	500 GB, 7200 rpm, 6.35 mm, self-encrypting (Opal 2)
	●	500 GB, 7200 rpm, 6.35 mm
	SSDs:
	●	M.2	(2280)	512 GB SATA-3 SS TLC (FIPS-140-2) (not available in Brazil on the 35.6-cm)
	●	M.2	(2280)	512 GB PCIe NVMe TLC (not available in Brazil on the 35.6-cm)
	●	M.2	(2280)	360 GB PCIe-3×4 SS TLC (not available in Brazil on the 35.6-cm)
	●	M.2	(2280)	256 GB SATA-3 SS TLC (Opal 2) (not available in Brazil on the 35.6-cm)
	●	M.2	(2280)	256 GB NVMe TLC (not available in Brazil on the 35.6-cm)
	●	M.2	(2280)	128 GB SATA-3 SS
Audio and video	Supports:
	HP Bang & Olufsen Audio
	Dual-array microphone
	Dual speakers
	Webcam (720p)
Ethernet	●	Broadcom 5762 10/100/1000 Ethernet NIC with DASH Support
	S3/S4/S5 Wake-on-LAN
Wireless	WLAN

Integrated wireless local area network (WLAN) options by way of wireless module

Two WLAN antennas built into display assembly

Integrated wireless personal area network (PAN) supported by Bluetooth® 4.0 or Bluetooth 4.2 combo card Supports the following WLAN formats:

●Realtek RTL8723BE-VB 802.11bgn solo-band 1x1 Wi-Fi Adapter + BT 4.0 combo adapter

●Intel Dual Band Wireless-AC 7265 802.11ac non-vPro 2x2 Wi-Fi Adapter + BT 4.2 combo adapter

●Intel Dual Band Wireless-AC 3168 802.11ac non-vPro 1x1 Wi-Fi Adapter + BT 4.2 combo adapter Supports no WLAN option

Compatible with iracast-certi ed devices

Compatible with HP Sure Connect

NFC

2Chapter 1 Product description

Category	Description
	Supports the following NFC formats:
	Integrated NFC Galapagos NXP NPC100 12C NCI 10 mm x 25 mm module (not available in Brazil)
	NFC antenna
	Supports no NFC option
	WWAN
	Integrated wireless wide area network (WWAN) options by way of wireless module
	Two WWAN antennas built into display assembly
	Supports the following WWAN formats:
	●	HP lt4120 LTE/EVDO/HSPA+ with GPS M.2 Mobile Broadband Module
	●	HP lt4132 LTE/HSPA + with GPS M.2 Mobile Broadband Module
	●	HP hs3210 WW HSPA+ Mobile Broadband Module (available in China, Japan, Taiwan, Indonesia, Russia,
		and Ukraine with non-vPro WLAN only)
	Supports no WWAN option
External media cards	Memory card reader (SD, SDHC, SDXC)
Ports	VGA
	USB 3.x charging
	USB 3.x
	USB Type-C
	DisplayPort
	RJ-45
	Docking connector
	Audio-out (headphone)/audio-in (microphone) combo jack
	AC port
Keyboard/pointing	Keyboard:
devices	Dura keys, backlit, spill resistant with drain
	Spill resistant with drain
	TouchPad:
	Gestures enabled by default: twonger scrolling, two-		nger pinch-zoom
	Taps enabled by default
	n/o	button
	Glass
Power requirements	65 W HP Smart AC adapter
	45 W HP Smart AC adapter
	45 W, 2-prong AC adapter
Security	Security lock
	Fingerprint reader
	Supports Trusted Platform Module (TPM) 1.2 or 2.0 n		neon, soldered down)

3

Category	Description
	Integrated Smart Card reader (active)
	Preboot authentication (password, smart card)
Operating system	Preinstalled:
	●	Windows® 7 Professional 64-bit
	●	Windows 7 Home Basic 64-bit Chinese Market (CPPP)
	●	Windows 10 Home	64-bit Chinese Market (CPPP)
	●	Windows 10 Home	64-bit High-end
	●	Windows 10 Home	64 High-end Single Language
	●	Windows 10 Home	64-bit High-end Chinese Market
	●	Windows 10 Professional 64-bit
	●	Windows 10 Professional 64-bit StF MSNA Standard
	●	Windows 10 Professional 64-bit StF MSNA High-end
	●	Windows 10 Professional 64-bit with downgrade to Windows 7 64-bit
	●	Windows 10 Professional 64-bit with downgrade to Windows 7 64-bit Volume License
	●	Windows 10 Professional 64-bit with downgrade to Windows 7 64-bit StF MSNA Standard
	●	Windows 10 Professional 64-bit with downgrade to Windows 7 64-bit StF MSNA High-End
	●	Windows 10 Home	64-bit
	●	Windows 10 Home	64-bit Single Language
	●	FreeDOS 2.0
	Restore Media–DR/SR-DVD
	●	Windows 7
	●	Windows 10
	Restore Media–DR-USB
	●	Windows 10
	Restore Media–OS-DVD
	●	Windows 7 Professional 64-bit
	●	Windows 10 Home	64-bit
	●	Windows 10 Pro 64-bit

Restore Media–OS-USB

●Windows 10 Pro 64-bit

ert ed

	●	Microsoft WHQL
	Web-only support
	●	Windows 10 Enterprise
	● Windows 7 Pro 64-bit (DDR4 memory only)
	● Windows 7 Enterprise 64-bit (DDR4 memory only)
Serviceability	End user replaceable parts:

4Chapter 1 Product description

Category	Description
	AC adapter
	Battery
	Hard drive
	SSD
	Memory module
	WLAN
	WWAN
	Keyboard

5

2 External component dent c t on

Right

Component		Description
(1)	USB Type-C charging port	Connects a USB device with a Type-C connector and can charge
		products such as cell phones, laptops, tablets, and MP3 players,
		even when the computer is o .
		NOTE: Adapters (purchased separately) may be required.
(2)	Dual-Mode DisplayPort	Connects an optional digital display device, such as a high-
		performance monitor or projector.
(3)	Memory card reader	Reads optional memory cards that store, manage, share, or
		access information.
(4)	Audio-out (headphone)/Audio-in (microphone)	Connects optional powered stereo speakers, headphones,
	combo jack	earbuds, a headset, or a television audio cable. Also connects an
		optional headset microphone. This jack does not support
		optional standalone microphones.
		WARNING! To reduce the risk of personal injury, adjust the
		volume before putting on headphones, earbuds, or a headset.
		For additional safety information, refer to the Regulatory,
		Safety, and Environmental Notices.
		To access this guide:
		1.	Type support in the taskbar search box, and then select
			the HP Support Assistant app.
			‒ or –
			Click the question mark icon in the taskbar.
		2.	Select My PC, select the pec c t ons tab, and then
			select User Guides.
		NOTE: When a device is connected to the jack, the computer
		speakers are disabled.
(5)	USB 3.0 port	Connects an optional USB device, such as a keyboard, mouse,
		external drive, printer, scanner or USB hub.

6 Chapter 2 External component identi cation

Component		Description
(6)	RJ-45 (network) jack/status lights	Connects a network cable.
		●	Green (left): The network is connected.
		●	Amber (right): Activity is occurring on the network.
(7)	Docking connector	Connects an optional docking device.
(8)	SIM card slot	Supports a wireless subscriber identity module (SIM) card. The
		SIM card slot is located inside the battery bay.
(9)	Power connector	Connects an AC adapter.

Right 7

Left

Component		Description
(1)	Security cable slot	Attaches an optional security cable to the computer.
		NOTE: The security cable is designed to act as a deterrent, but
		it may not prevent the computer from being mishandled or
		stolen.
(2)	Vents	Enable air ow to cool internal components.
		NOTE: The computer fan starts up automatically to cool
		internal components and prevent overheating. It is normal for
		the internal fan to cycle on and o during routine operation.
(3)	External monitor port	Connects an external VGA monitor or projector.
(4)	USB 3.0 charging (powered) port	Connects an optional USB device, such as a keyboard, mouse,
		external drive, printer, scanner or USB hub. Standard USB ports
		will not charge all USB devices or will charge using a low current.
		Some USB devices require power and require you to use a
		powered port.
		NOTE: USB charging ports can also charge select models of
		cell phones and MP3 players, even when the computer is o .
(5)	Smart card reader	Supports optional smart cards.

8 Chapter 2 External component identi cation

Display

Component		Description
(1)	WLAN antennas*	Send and receive wireless signals to communicate with wireless local
		area networks (WLANs).
(2)	WWAN antennas*	Send and receive wireless signals to communicate with wireless wide
		area networks (WWANs).
(3)	Internal microphones	Record sound.
(4)	Webcam light	On: The webcam is in use.
(5)	Webcam	Records video and captures photographs. Some models allow you to

video conference and chat online using streaming video. To use the webcam:

▲ Type camera in the taskbar search box, and then select

Camera.

*The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around the antennas free from obstructions.

For wireless regulatory notices, see the section of the Regulatory, Safety, and Environmental Notices that applies to your country or region.

To access this guide:

1.Type support in the taskbar search box, and then select the HP Support Assistant app.

‒ or –

Click the question mark icon in the taskbar.

2. Select My PC, select the pec c t ons tab, and then select User Guides.

Display 9

Top

TouchPad

Component		Description
(1)	Pointing stick (select products only)	Moves the pointer and selects or activates items on the screen.
(2)	Left pointing stick button (select products only)	Functions like the left button on an external mouse.
(3)	TouchPad on/o button/TouchPad light	Turns the TouchPad on and o .
		●	On: The TouchPad is o .
		●	The TouchPad is on.
(4)	TouchPad zone	Reads your nger gestures to move the pointer or activate
		items on the screen.
(5)	Left TouchPad button	Functions like the left button on an external mouse.
(6)	Right pointing stick button (select products	Functions like the right button on an external mouse.
	only)
(7)	Right TouchPad button	Functions like the right button on an external mouse.

10 Chapter 2 External component identi cation

Lights

NOTE: Refer to the illustration that most closely matches your computer.

Component		Description
(1)	Power light	●	On: The computer is on.
		●	Blinking: The computer is in the Sleep state, a power-saving
			state. The computer shuts o power to the display and
			other unneeded components.
		●	The computer is o or in Hibernation. Hibernation is a
			power-saving state that uses the least amount of power.
(2)	Microphone mute light	●	Amber: microphone sound is o .
		●	microphone sound is on.
(3)	Num lock light	On: Num lock is on.
(4)	Wireless light	On: An integrated wireless device, such as a wireless local area
		network (WLAN) device and/or a Bluetooth® device, is on.
		NOTE: On some models, the wireless light is amber when all
		wireless devices are o .
(5)	Mute light	●	Amber: Computer sound is o .
		●	Computer sound is on.
(6)	Caps lock light	On: Caps lock is on, which switches the key input to all capital
		letters.
(7)	TouchPad light	●	On: The TouchPad is o .

Top 11

Component	Description
	●	The TouchPad is on.

Component		Description
(1)	Power light	●	On: The computer is on.
		●	Blinking: The computer is in the Sleep state, a power-saving
			state. The computer shuts o power to the display and
			other unneeded components.
		●	The computer is o or in Hibernation. Hibernation is a
			power-saving state that uses the least amount of power.
(2)	Microphone mute light	●	Amber: microphone sound is o .
		●	microphone sound is on.
(3)	Num lock light	On: Num lock is on.
(4)	Wireless light	On: An integrated wireless device, such as a wireless local area
		network (WLAN) device and/or a Bluetooth® device, is on.
		NOTE: On some models, the wireless light is amber when all
		wireless devices are o .
(5)	Mute light	●	Amber: Computer sound is o .
		●	Computer sound is on.

12 Chapter 2 External component identi cation

Component		Description
(6)	Caps lock light	On: Caps lock is on, which switches the key input to all capital
		letters.
(7)	TouchPad light	●	On: The TouchPad is o .
		●	The TouchPad is on.

Top 13

Buttons, speakers, and n erpr nt reader

Component		Description
(1)	Power button	●	When the computer is o , press the button to turn on the
			computer.
		●	When the computer is on, press the button brie y to initiate
			Sleep.
		●	When the computer is in the Sleep state, press the button
			brie y to exit Sleep.
		●	When the computer is in Hibernation, press the button
			brie y to exit Hibernation.
		CAUTION: Pressing and holding down the power button results
		in the loss of unsaved information.
		If the computer has stopped responding and shutdown
		procedures are ine ective, press and hold the power button for at
		least 5 seconds to turn o the computer.
		To learn more about your power settings, see your power
		options.
		▲	Type power in the taskbar search box, and then select
			Power and sleep settings.
			‒ or –
			Right-click the Start button, and then select Power
			Options.
(2)	Premium speakers (select products only)	Produce sound.
(3)	Wireless button	Turns the wireless feature on or o but does not establish a
		wireless connection.

14 Chapter 2 External component identi cation

Component		Description
		A wireless network must be set up before a wireless connection is
		possible.
(4)	Volume mute button	Mutes and restores speaker sound.
(5)	Fingerprint reader (select products only)	Allows a ngerprint logon to Windows, instead of a password
		logon.

Top 15

Special function keys

NOTE: Refer to the illustration that most closely matches your computer.

Component		Description
(1)	esc key	Displays system information when pressed in combination with
		the fn key.
(2)	fn key	Executes frequently used system functions when pressed in
		combination with a function key, the num lock key, or the esc
		key.
		See Using the hot keys on page 17.
(3)	Windows key	Opens the Start menu.
		NOTE: Pressing the Windows key again will close the Start
		menu.
(4)	Embedded numeric keypad	A numeric keypad superimposed over the keyboard alphabet
		keys that enables you to add, subtract, and perform other
		numeric tasks. When num lock is on, the keypad can be used like
		an external numeric keypad.
(5)	Windows application key	Displays options for a selected object.
(6)	num lock key	Turns the embedded numeric keypad on and o .

16 Chapter 2 External component identi cation

Component		Description
(1)	esc key	Displays system information when pressed in combination with
		the fn key.
(2)	fn key	Executes frequently used system functions when pressed in
		combination with a function key, the num lock key, or the esc
		key.
		See Using the hot keys on page 17.
(3)	Windows key	Opens the Start menu.
		NOTE: Pressing the Windows key again will close the Start
		menu.
(4)	num lock key	Turns the embedded numeric keypad on and o .
(5)	Integrated numeric keypad	A separate keypad to the right of the alphabet keyboard that
		enables you to add, subtract, and perform other numeric tasks.
		When num lock is on, the integrated keypad can be used like an
		external numeric keypad.

Using the hot keys

To use a hot key:

▲Press the fn key, and then press the correct function key represented by the icons below.

Press fn+function key Description

Initiates Sleep, which saves your information in system memory. The display and other system components turn o and power is conserved.

To exit Sleep, brie y press the power button.

CAUTION: To reduce the risk of information loss, save your work before initiating Sleep.

Turns the keyboard backlight o or on.

NOTE: To conserve battery power, turn o this feature.

Switches the screen image among display devices connected to the system. For example, if a monitor is connected to the computer, repeatedly pressing fn+f4 alternates the screen image from computer display to monitor display to simultaneous display on both the computer and the monitor.

Top 17

Press fn+function key Description

Most external monitors receive video information on the computer using the external VGA video standard. The fn+f4 hot key can also alternate images among other devices that are receiving video information on the computer.

Decreases the screen brightness incrementally as long as you hold down the key.

Increases the screen brightness incrementally as long as you hold down the key.

Decreases speaker volume incrementally while you hold down the key.

Increases speaker volume incrementally while you hold down the key.

Mutes the microphone.

18 Chapter 2 External component identi cation

Bottom

Component		Description
(1)	Docking connectors	Connect an optional docking device.
(2)	Vents	Enable air ow to cool internal components.
		NOTE: The computer fan starts up automatically to cool
		internal components and prevent overheating. It is normal
		for the internal fan to cycle on and o during routine
		operation.

Bottom 19

Front

Component		Description
(1)	Wireless light	On: An integrated wireless device, such as a wireless local
		area network (WLAN) device and/or a Bluetooth® device, is
		on.
		NOTE: On some models, the wireless light is amber when
		all wireless devices are o .
(2)	Power light	●	On: The computer is on.
		●	Blinking: The computer is in the Sleep state, a power-
			saving state. The computer shuts o power to the
			display and other unneeded components.
		●	The computer is o or in Hibernation.
			Hibernation is a power-saving state that uses the
			least amount of power.
(3)	Battery light	When AC power is connected:
		●	White: The battery charge is greater than 90 percent.
		●	Amber: The battery charge is from 0 to 90 percent.
		●	The battery is not charging.

When AC power is disconnected (battery not charging):

		●	Blinking amber: The battery has reached a low
			battery level. When the battery has reached a critical
			battery level, the battery light begins blinking
			rapidly.
		●	The battery is not charging.
(4)	Drive light	●	Blinking white: The hard drive is being accessed.
		●	Amber: HP 3D DriveGuard has temporarily parked the
			hard drive.

Locating system information

Important system information is located on the bottom edge of the tablet or on the keyboard base. You may need the information when travelling internationally or when you contact support:

(1): Serial number

(2): Product number

(3): Model number

(4): Warranty period

20 Chapter 2 External component identi cation