HP ProBook 4720s User Manual

HP ProBook Notebook PC

User Guide

© Copyright 2010 Hewlett-Packard
Development Company, L.P.

Bluetooth is a trademark owned by its
proprietor and used by Hewlett-Packard
Company under license. SD Logo is a
trademark of its proprietor.

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: March 2010

Document Part Number: 598085-001

Product notice

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

Safety warning notice

WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not

place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a
hard, flat 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 airflow. 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 computer and the
AC adapter comply with the user-accessible surface temperature limits defined by the International
Standard for Safety of Information Technology Equipment (IEC 60950).

iii

iv Safety warning notice

Table of contents

1 Features ........................................................................................................................................................... 1

Identifying hardware ............................................................................................................................. 1

Top components .................................................................................................................. 1

TouchPad ............................................................................................................ 1

Lights ................................................................................................................... 2

Buttons, speakers, switches, and fingerprint reader (select models only) .......... 3

Keys .................................................................................................................... 5

Front components ................................................................................................................ 6

Right-side components ........................................................................................................ 6

Left-side components .......................................................................................................... 7

Bottom components ............................................................................................................. 9

Display ................................................................................................................................. 9

Wireless antennas (select models only) ............................................................................ 10

Additional hardware components ...................................................................................... 12

Identifying the labels ........................................................................................................................... 12

2 Pointing devices and keyboard ................................................................................................................... 14

Using pointing devices ....................................................................................................................... 14

Setting pointing device preferences ................................................................................... 14

Connecting an external mouse .......................................................................................... 14

Using the keyboard ............................................................................................................................ 14

Using hotkeys .................................................................................................................... 14

Initiating Sleep ................................................................................................... 15

Decreasing screen brightness ........................................................................... 15

Increasing screen brightness ............................................................................ 15

Switching the screen image .............................................................................. 16

Opening the default e-mail application .............................................................. 16

Opening the default Web browser ..................................................................... 16

Muting speaker sound ....................................................................................... 16

Decreasing speaker sound ............................................................................... 16

Increasing speaker sound ................................................................................. 16

Playing the previous track or section of an audio CD or a DVD ........................ 16

Playing, pausing, or resuming an audio CD or a DVD ...................................... 16

Playing the next track or section of an audio CD or a DVD .............................. 17

Using the embedded numeric keypad ................................................................................................ 17

Enabling and disabling the embedded numeric keypad .................................................... 17

Switching key functions on the embedded numeric keypad .............................................. 17

Using an optional external numeric keypad ....................................................................................... 17

v

Cleaning the TouchPad and keyboard ............................................................................................... 17

3 Multimedia ..................................................................................................................................................... 19

Multimedia features ............................................................................................................................ 19

Identifying your multimedia components ........................................................................... 19

Adjusting the volume ......................................................................................................... 20

Multimedia software ........................................................................................................................... 21

Accessing your preinstalled multimedia software .............................................................. 22

Installing multimedia software from a disc ......................................................................... 22

Audio .................................................................................................................................................. 22

Connecting external audio devices .................................................................................... 22

Checking your audio functions ........................................................................................... 23

Video .................................................................................................................................................. 23

Connecting an external monitor or projector ...................................................................... 23

Using the external monitor port ......................................................................... 23

Using the HDMI port .......................................................................................................... 24

Optical drive (select models only) ...................................................................................................... 25

Using optical discs (CDs, DVDs, and BDs) ....................................................................... 25

Selecting the right disc (CDs, DVDs, and BDs) ................................................................. 26

CD-R discs ........................................................................................................ 26

CD-RW discs ..................................................................................................... 26

DVD±R discs ..................................................................................................... 27

DVD±RW discs ................................................................................................. 27

LightScribe DVD+R discs .................................................................................. 27

Blu-ray Discs (BDs) ........................................................................................... 27

Playing a CD, DVD, or BD ................................................................................................. 27

Observing the copyright warning ....................................................................................... 28

Copying a CD or DVD ........................................................................................................ 28

Removing an optical disc (CD, DVD, or BD) ..................................................................... 28

The optical disc tray does not open for removal of a CD, DVD, or BD .............................. 29

Webcam ............................................................................................................................................. 30

4 Power management ...................................................................................................................................... 31

Setting power options ......................................................................................................................... 31

Using power-saving states ................................................................................................. 31

Initiating and exiting Suspend ........................................................................... 31

Initiating and exiting Hibernation ....................................................................... 31

Using the Power icon ......................................................................................................... 32

Using power management ................................................................................................. 32

Viewing the current power management settings ............................................. 32

Changing the current power management settings .......................................... 32

Using external AC power .................................................................................................................... 32

Connecting the AC adapter ............................................................................................... 33

vi

Using battery power ........................................................................................................................... 33

Inserting or removing the battery ....................................................................................... 34

Charging a battery ............................................................................................................. 35

Maximizing battery discharge time .................................................................................... 36

Managing low battery levels .............................................................................................. 36

Identifying low battery levels ............................................................................. 36

Resolving a low battery level ............................................................................. 36

Resolving a low battery level when external power is available ....... 36

Resolving a low battery level when a charged battery is

available ........................................................................................... 37

Resolving a low battery level when no power source is

available ........................................................................................... 37

Resolving a low battery level when the computer cannot exit

Hibernation ....................................................................................... 37

Calibrating a battery ........................................................................................................... 37

Step 1: Fully charge the battery ........................................................................ 37

Step 2: Disable Hibernation and Suspend ........................................................ 38

Step 3: Discharge the battery ............................................................................ 38

Step 4: Fully recharge the battery ..................................................................... 38

Step 5: Reenable Hibernation and Suspend ..................................................... 39

Conserving battery power .................................................................................................. 39

Storing a battery ................................................................................................................ 39

Disposing of a used battery ............................................................................................... 39

Replacing the battery ......................................................................................................... 40

Testing an AC adapter ....................................................................................................................... 40

Shutting down the computer ............................................................................................................... 40

5 Drives ............................................................................................................................................................. 42

Handling drives ................................................................................................................................... 42

Using external drives .......................................................................................................................... 42

Using optional external devices ......................................................................................... 43

Replacing the hard drive .................................................................................................................... 43

6 External devices ............................................................................................................................................ 57

Using a USB device ........................................................................................................................... 57

Connecting a USB device .................................................................................................. 57

Removing a USB device .................................................................................................... 57

Using USB legacy support ................................................................................................. 58

Using an eSATA device ..................................................................................................................... 58

Connecting an eSATA device ............................................................................................ 58

Stopping and removing an eSATA device ......................................................................... 59

Using external drives .......................................................................................................................... 59

Using optional external devices ......................................................................................... 59

vii

7 External media cards .................................................................................................................................... 61

Using Media Card Reader cards ........................................................................................................ 61

Inserting a digital card ........................................................................................................ 61

Removing a digital card ..................................................................................................... 62

Using ExpressCards (select models only) .......................................................................................... 62

Configuring an ExpressCard .............................................................................................. 62

Inserting an ExpressCard .................................................................................................. 62

Removing an ExpressCard ................................................................................................ 63

8 Memory modules .......................................................................................................................................... 65

Adding or replacing memory modules ................................................................................................ 65

9 Security .......................................................................................................................................................... 76

Protecting the computer ..................................................................................................................... 76

Using passwords ................................................................................................................................ 76

Setting passwords in the operating system ....................................................................... 77

Setting passwords in Computer Setup .............................................................................. 77

Setup password ................................................................................................................. 77

Managing a setup password ............................................................................. 78

Entering a setup password ................................................................................ 78

Using Computer Setup DriveLock ..................................................................................... 78

Setting a DriveLock password ........................................................................... 79

Entering a DriveLock password ........................................................................ 79

Changing a DriveLock password ...................................................................... 79

Removing DriveLock protection ........................................................................ 80

Using Computer Setup security features ............................................................................................ 80

Securing system devices ................................................................................................... 80

Using Computer Setup stringent security .......................................................................... 80

Setting stringent security ................................................................................... 81

Removing stringent security .............................................................................. 81

Viewing Computer Setup System Information ................................................................... 81

Using firewall software ....................................................................................................................... 82

Setting up automatic online updates .................................................................................................. 82

Installing a security cable ................................................................................................................... 82

10 Computer Setup .......................................................................................................................................... 84

Starting Computer Setup .................................................................................................................... 84

Using Computer Setup ....................................................................................................................... 84

Navigating and selecting in Computer Setup ..................................................................... 84

Restoring factory settings in Computer Setup ................................................................... 85

Computer Setup menus ..................................................................................................................... 85

File menu ........................................................................................................................... 85

Security menu .................................................................................................................... 85

viii

Diagnostics menu .............................................................................................................. 86

System Configuration menu .............................................................................................. 87

Index ................................................................................................................................................................... 89

ix

x

1Features

Identifying hardware

To see a list of hardware installed in the computer, select Computer > Control Center >

▲

YaST > Hardware Information.

Top components

TouchPad

Component Description

(1) TouchPad off indicator To turn the TouchPad zone on and off, quickly double-tap the

(2) TouchPad zone Moves the pointer and selects or activates items on the screen.

(3) Left TouchPad button Functions like the left button on an external mouse.

(4) Right TouchPad button Functions like the right button on an external mouse.

TouchPad off indicator.

NOTE: When the TouchPad zone is active, the light is off.

Identifying hardware 1

Lights

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

Component Description

(1) TouchPad off indicator

(2) Caps lock light On: Caps lock is on.

(3) E-mail client light Blinking: Launching Evolution e-mail client.

(4) Web browser light Blinking: Launching Firefox browser.

2 Chapter 1 Features

Amber: The TouchPad is off.

●

Off: The TouchPad is on.

●

Component Description

(5) Power light

(6) Wireless light

On: The computer is on.

●

Blinking: The computer is in the Suspend state.

●

Off: The computer is off or in Hibernation.

●

White: An integrated wireless device, such as a wireless local

●

area network (WLAN) device and/or a Bluetooth® device, is
on.

Amber: All wireless devices are off.

●

Buttons, speakers, switches, and fingerprint reader (select models only)

NOTE: Your computer may look slightly different from the illustration in this section.

Component Description

(1) Speakers (2) Produce sound.

(2) Internal display switch Turns off the display if the display is closed while the power is on.

Identifying hardware 3

Component Description

(3) Power button

(4) Fingerprint reader (select models only) Allows a fingerprint logon instead of a password logon.

When the computer is off, press the button to turn on the

●

computer.

When the computer is on, press the button to shut down the

●

computer.

When the computer is in the Suspend state, press the button

●

briefly to exit Suspend.

When the computer is in Hibernation, press the button briefly

●

to exit Hibernation.

If the computer has stopped responding and operating system
shutdown procedures are ineffective, press and hold the power
button for at least 5 seconds to turn off the computer.

To learn more about your power settings and how to change them,
select Computer > Control Center > System > Power
Management.

4 Chapter 1 Features

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

(3) Embedded numeric keypad keys Can be used like the keys on an external numeric keypad when

(4) Function keys Execute frequently used system functions when pressed in

combination with a function key or the esc key.

pressed in combination with the fn and num lk keys.

combination with the fn key.

Identifying hardware 5

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

(3) Integrated numeric keypad keys Can be used like the keys on an external numeric keypad.

(4) Function keys Execute frequently used system functions when pressed in

Front components

Component Description

(1) Drive light Blinking white: The hard drive or optical drive is being accessed.

(2) Media Card Reader Supports the following optional digital card formats:

combination with a function key or the esc key.

combination with the fn key.

Memory Stick

●

Memory Stick Duo (adapter required)

●

Memory Stick Pro (adapter required)

●

MultiMediaCard (MMC)

●

Secure Digital (SD) Memory Card

●

xD-Picture Card (XD)

●

xD-Picture Card (XD) Type H

●

xD-Picture Card (XD) Type M

●

(3) Audio-out (headphone) jack Produces sound when connected to optional powered stereo

(4) Audio-in (microphone) jack Connects an optional computer headset microphone, stereo array

Right-side components

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

6 Chapter 1 Features

speakers, headphones, ear buds, a headset, or television audio.

NOTE: When a device is connected to the headphone jack, the

computer speakers are disabled.

microphone, or monaural microphone.

Component Description

(1) USB ports (2) Connect optional USB devices.

(2) RJ-11 (modem) jack (select models only) Connects a modem cable.

(3) Optical drive light (select models only) Blinking: The optical drive is being accessed.

(4) Optical drive (select models only) Reads optical discs and, on select models, also writes to optical

Component Description

(1) USB ports (2) Connect optional USB devices.

(2) RJ-11 (modem) jack (select models only) Connects a modem cable.

(3) Optical drive (select models only) Reads optical discs and, on select models, also writes to optical

(4) Optical drive light (select models only) Blinking: The optical drive is being accessed.

(5) AC adapter light

discs.

discs.

On: The computer is connected to external power and the

●

battery is charging.

Off:

●

The computer is not connected to external power.

◦

The computer is connected to external power, but the

◦

battery is fully charged.

(6) Power connector Connects an AC adapter.

Left-side components

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

Identifying hardware 7

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) Power connector Connects an AC adapter.

(3) AC adapter light

(4) Vent Enables airflow to cool internal components.

(5) External monitor port Connects an external VGA monitor or projector.

(6) RJ-45 (network) jack Connects a network cable.

(7) HDMI port Connects an optional HDMI device.

(8) Combo eSATA/USB port Connects an optional USB device or an optional high-performance

(9) USB port Connects an optional USB device.

(10) ExpressCard slot Supports optional ExpressCards.

On: The computer is connected to external power and the

●

battery is charging.

Off:

●

The computer is not connected to external power.

◦

The computer is connected to external power, but the

◦

battery is fully charged.

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 off during routine operation.

eSATA component, such as an eSATA external hard drive.

Component Description

(1) Security cable slot Attaches an optional security cable to the computer.

8 Chapter 1 Features

NOTE: The security cable is designed to act as a deterrent, but

it may not prevent the computer from being mishandled or stolen.

Component Description

(2) Vent Enables airflow to cool internal components.

(3) External monitor port Connects an external VGA monitor or projector.

(4) RJ-45 (network) jack Connects a network cable.

(5) HDMI port Connects an optional HDMI device.

(6) Combo eSATA/USB port Connects an optional USB device or an optional high-performance

(7) USB port Connects an optional USB device.

(8) ExpressCard slot Supports optional ExpressCards.

Bottom 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 off during routine operation.

eSATA component, such as an eSATA external hard drive.

Display

Component Description

(1) Battery release latches (2) Release the battery from the battery bay.

(2) Battery bay Holds the battery.

(3) SIM slot (select models only) Contains a wireless subscriber identity module (SIM). The SIM slot

is located inside the battery bay.

NOTE: Your computer may look slightly different from the illustration in this section.

Identifying hardware 9

Component Description

(1) Internal display switch Turns off the display if the display is closed while the power is on.

(2) Internal microphone Records sound.

(3) Webcam light (select models only) On: The webcam is in use.

(4) Webcam (select models only) Records video and captures still photographs.

Wireless antennas (select models only)

The antennas send and receive signals from one or more wireless devices. These antennas are not
visible from the outside of the computer.

10 Chapter 1 Features

Component Description

(1) WWAN antennas (2)* Send and receive wireless signals to communicate with wireless

(2) WLAN antennas (2)* Send and receive wireless signals to communicate with wireless

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

To see wireless regulatory notices, refer to the section of the

Notices

that applies to your country or region. These notices are located on the user guide CD included

wide area networks (WWANs).

local area networks (WLANs).

Regulatory, Safety and Environmental

with your computer.

Identifying hardware 11

Additional hardware components

Component Description

(1) Power cord* Connects an AC adapter to an AC outlet.

(2) Battery* Powers the computer when the computer is not plugged into an

(3) AC adapter Converts AC power to DC power.

*Batteries and power cords vary in appearance by country or region.

Identifying the labels

The labels affixed to the computer provide information you may need when you troubleshoot system
problems or travel internationally with the computer:

Service tag—Provides important information, including the following:

●

Product name (1). This is the product name affixed to the front of your notebook.

◦

Serial number (s/n) (2). This is an alphanumeric number that is unique to each product.

◦

Part number/Product number (p/n) (3). This number provides specific information about the

◦

product's hardware components. The part number helps a service technician to determine
what components and parts are needed.

external power source.

Model description (4). This is the number you use to locate documents, drivers, and support

◦

for your notebook.

Warranty period (5). Describes the duration of the warranty period for this computer.

◦

12 Chapter 1 Features

Have this information available when you contact technical support. The service tag label is affixed
to the bottom of the computer.

Regulatory label—Provides regulatory information about the computer. The regulatory label is

●

affixed to the bottom of the computer.

Modem approval label—Provides regulatory information about the modem and lists the agency

●

approval markings required by some of the countries in which the modem has been approved for
use. You may need this information when traveling internationally. The modem approval label is
affixed to the bottom of the computer.

Wireless certification label(s) (select models only)—Provide information about optional wireless

●

devices and the approval markings of some of the countries in which the devices have been
approved for use. An optional device may be a WLAN device or a Bluetooth device. If your computer
model includes one or more wireless devices, one or more certification labels are included with
your computer. You may need this information when traveling internationally. Wireless certification
labels are affixed to the bottom of the computer.

SIM (subscriber identity module) label (select models only)—Provides the ICCID (Integrated Circuit

●

Card Identifier) of your SIM. This label is located inside the battery bay.

HP Mobile Broadband Module serial number label (select models only)—Provides the serial

●

number of your HP Mobile Broadband Module. This label is affixed to the bottom of the
computer.

Identifying the labels 13

2 Pointing devices and keyboard

Using pointing devices

Setting pointing device preferences

Use Mouse Properties or TouchPad to customize settings for pointing devices, such as button
configuration, click speed, and pointer options.

To access Mouse Properties, select Computer > Control Center > Mouse.

To access TouchPad properties, select Computer > Control Center > TouchPad.

Connecting an external mouse

You can connect an external USB mouse to the computer using one of the USB ports on the computer.
A USB device can be added by connecting the device to a USB port on the computer or on an optional
docking device (select models only).

Using the keyboard

Using hotkeys

Hotkeys are combinations of the fn key (1) and either the esc key (2) or one of the function keys (3).

The icons on the f1 through f12 keys represent the hotkey functions. Hotkey functions and procedures
are discussed in the following sections.

NOTE: Your computer may look slightly different from the illustration in this section.

14 Chapter 2 Pointing devices and keyboard

Function Hotkey

Initiate Sleep. fn+f1

Decrease screen brightness. fn+f2

Increase screen brightness. fn+f3

Switch the screen image. fn+f4

Open the default e-mail client. fn+f5

Open the default Web browser. fn+f6

Mute speaker sound. fn+f7

Decrease volume speaker sound. fn+f8

Increase volume speaker sound. fn+f9

Play previous track. fn+f10

Play, pause, or resume a CD, DVD, or BD. fn+f11

Play next track. fn+f12

To use a hotkey command on the computer keyboard, follow either of these steps:

Briefly press the fn key, and then briefly press the second key of the hotkey command.

●

– or –

Press and hold down the fn key, briefly press the second key of the hotkey command, and then

●

release both keys at the same time.

Initiating Sleep

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

Press fn+f1 to initiate Sleep.

When Sleep is initiated, your information is stored in system memory, the screen is cleared, and power
is conserved. While the computer is in the Sleep state, the power lights blink.

The computer must be on before you can initiate Sleep.

NOTE: If a critical battery level occurs while the computer is in the Sleep state, the computer initiates

Hibernation and the information stored in memory is saved to the hard drive.

To exit Sleep, briefly press the power button.

The function of the fn+f1 hotkey can be changed. For example, you can set the fn+f1 hotkey to initiate
Hibernation instead of Sleep.

Decreasing screen brightness

Press fn+f2 to decrease screen brightness. Hold down the hotkey to decrease the brightness level
incrementally.

Increasing screen brightness

Press fn+f3 to increase screen brightness. Hold down the hotkey to increase the brightness level
incrementally.

Using the keyboard 15

Switching the screen image

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

Most external monitors receive video information from the computer using the external VGA video
standard. The fn+f4 hotkey can also alternate images among other devices receiving video information
from the computer.

The following video transmission types, with examples of devices that use them, are supported by the

fn+f4 hotkey:

LCD (computer display)

●

External VGA (most external monitors)

●

HDMI (televisions, camcorders, DVD players, VCRs, and video capture cards with HDMI ports)

●

Composite video (televisions, camcorders, DVD players, VCRs, and video capture cards with

●

composite-video-in jacks)

NOTE: Composite video devices can be connected to the system only by using an optional

docking device (select models only).

Opening the default e-mail application

Press fn+f5 to open the default e-mail application.

Opening the default Web browser

Press fn+f6 to open the default Web browser.

Muting speaker sound

Press fn+f7 to mute speaker sound. Press the hotkey again to restore speaker sound.

Decreasing speaker sound

Press fn+f8 to decrease speaker volume. Hold down the hotkey to decrease speaker volume
incrementally.

Increasing speaker sound

Press fn+f9 to increase speaker volume. Hold down the hotkey to increase speaker volume
incrementally.

Playing the previous track or section of an audio CD or a DVD

While an audio CD or a DVD is playing, press fn+f10 to play the previous track of the CD or the previous
section of the DVD.

Playing, pausing, or resuming an audio CD or a DVD

The fn+f11 hotkey functions only when an audio CD or a DVD is inserted.

If the audio CD or the DVD is not playing, press fn+f11 to begin or resume the play.

●

If the audio CD or the DVD is playing, press fn+f11 to pause the play.

●

16 Chapter 2 Pointing devices and keyboard

Playing the next track or section of an audio CD or a DVD

While an audio CD or a DVD is playing, press fn+f12 to play the next track of the CD or the next section
of the DVD.

Using the embedded numeric keypad

The 15 keys of the embedded numeric keypad can be used like the keys on an external keypad. When
the embedded numeric keypad is turned on, each key on the keypad performs the function indicated by
the icon in the upper-right corner of the key.

Enabling and disabling the embedded numeric keypad

Press fn+num lk to enable the embedded numeric keypad. Press fn+num lk again to return the keys to
their standard keyboard functions.

NOTE: The embedded numeric keypad will not function while an external keyboard or numeric keypad

is connected to the computer.

Switching key functions on the embedded numeric keypad

You can temporarily alternate the functions of keys on the embedded numeric keypad between their
standard keyboard functions and their keypad functions by using the fn key or the fn+shift key
combination.

To change the function of a keypad key to keypad functions while the keypad is off, press and hold

●

the fn key while pressing the keypad key.

To use the keypad keys temporarily as standard keys while the keypad is on:

●

Press and hold the fn key to type in lowercase.

◦

Press and hold fn+shift to type in uppercase.

◦

Using an optional external numeric keypad

Keys on most external numeric keypads function differently according to whether num lock is on or off.
(Num lock is turned off at the factory.) For example:

When num lock is on, most keypad keys type numbers.

●

When num lock is off, most keypad keys function like the arrow, page up, or page down keys.

●

When num lock on an external keypad is turned on, the num lock light on the computer is turned on.
When num lock on an external keypad is turned off, the num lock light on the computer is turned off.

To turn num lock on or off on an external keypad as you work:

Press the num lk key on the external keypad, not on the computer.

▲

Cleaning the TouchPad and keyboard

Dirt and grease on the TouchPad can cause the pointer to jump around on the screen. To avoid this,
clean the TouchPad with a damp cloth, and wash your hands frequently when using the computer.

WARNING! To reduce the risk of electric shock or damage to internal components, do not use a

vacuum cleaner attachment to clean the keyboard. A vacuum cleaner can deposit household debris on
the keyboard surface.

Using the embedded numeric keypad 17

Clean the keyboard regularly to prevent keys from sticking and to remove dust, lint, and particles that
can become trapped beneath the keys. A can of compressed air with a straw extension can be used to
blow air around and under the keys to loosen and remove debris.

18 Chapter 2 Pointing devices and keyboard

3 Multimedia

Multimedia features

Your computer includes multimedia features that allow you to listen to music, watch movies, and view
pictures. Your computer may include the following multimedia components:

Optical drive for playing audio and video discs

●

Integrated speakers for listening to music

●

Integrated microphone for recording your own audio

●

Integrated webcam that allows you to capture and share video

●

Preinstalled multimedia software that allows you to play and manage your music, movies, and

●

pictures

Hotkeys that provide fast access to multimedia tasks

●

NOTE: Your computer may not include all of the components listed.

The following sections explain how to identify and use the multimedia components included with your
computer.

Identifying your multimedia components

The following illustration and table describe the multimedia features of the computer.

NOTE: Your computer may look slightly different from the illustration in this section.

Multimedia features 19

Component Description

(1) Internal microphone Records sound.

(2) Webcam Records video and captures still photographs.

(3) Speakers (2) Produce sound.

(4) Audio-out (headphone) jack Produces sound when connected to optional powered stereo

(5) Audio-in (microphone) jack Connects an optional computer headset microphone, stereo array

Adjusting the volume

You can adjust the volume using the following controls:

Computer volume keys:

●

To mute or restore volume, press and hold the fn key (1), and then press the mute key f7

◦

(2).

To decrease volume, press and hold the fn key (1), and then tap the volume down key f8

◦

(3) until the desired volume level is reached.

20 Chapter 3 Multimedia

speakers, headphones, ear buds, a headset, or television audio.

NOTE: When a device is connected to the headphone jack, the

computer speakers are disabled.

microphone, or monaural microphone.