This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides
comprehensive information on identifying computer features, components, and spare parts;
troubleshooting computer problems; and performing computer disassembly procedures.
ATI and ATI Mobility Radeon are
trademarks of Advanced Micro Devices,
Inc. Bluetooth is a trademark owned by its
proprietor and used by Hewlett-Packard
Company under license. Intel, Arrandale,
Core, and Pentium are trademarks of Intel
corporation in the U.S. and other countries.
Microsoft and Windows are U.S. registered
trademarks of Microsoft Corporation. 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: June 2010
Document Part Number: 616710-001
MSG revision history
RevisionPublication dateDescription
AOctober 2010
Added newly supported hard drives to spare parts listings in the
●
following locations:
storage devices on page 27, Sequential part number listing
on page 30, Hard drive on page 43.
Added newly supported memory modules to spare parts listings in the
●
following locations:
Sequential part number listing on page 30, Memory module
on page 51.
●Added newly supported processors to spare parts listings in the
following locations: Computer major components on page 18,
Sequential part number listing on page 30, Processor on page 83.
●Added newly supported system boards to spare parts listings in the
following locations:
Sequential part number listing on page 30, System board
on page 75.
Added newly supported back covers to spare parts listings in the
●
following locations: Computer major components on page 18,
Sequential part number listing on page 30, Display assembly
components on page 24, Display assembly on page 69.
●Added newly supported display assemblies to spare parts listings in
the following locations:
Sequential part number listing on page 30, Display assembly
components on page 24, Display assembly on page 69.
●Added newly supported optical drives to spare parts listings in the
following locations: Computer major components on page 18, Mass
storage devices on page 27, Sequential part number listing
on page 30, Optical drive on page 46.
Computer major components on page 18, Mass
Computer major components on page 18,
Computer major components on page 18,
Computer major components on page 18,
BDecember 2010
Added newly supported processors to spare parts listings in the
●
following locations:
Sequential part number listing on page 30, Processor on page 83.
Added newly supported system boards to spare parts listings in the
●
following locations:
Sequential part number listing on page 30, System board
on page 75.
Computer major components on page 18,
Computer major components on page 18,
ENWWiii
iv MSG revision historyENWW
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).
Index ................................................................................................................................................................. 127
WirelessIntegrated wireless local area network (WLAN)
options by way of wireless module:
2 wireless antennas built into display assembly√√
Support for no-WLAN option√√
Support for the following WLAN formats:
Atheros AR9285 802.11 a/b/g/n 2x2 WiFi adapter√√
Broadcom 4313 802.11b/g/n 1x1 WiFi Adapter√√
Broadcom 4313 802.11b/g/n 1x1 WiFi and 2070
Bluetooth 2.1+EDR Combo adapter (BT3.0+HS ready)
Ralink RT3090BC4 802.11b/g/n 1x1 WiFi and Bluetooth
2.1+EDR Combo Adapter (BT3.0+HS ready)
√√
√√
√√
√√
√√
External media card (select
models only )
PortsAudio-in (stereo microphone)√√
Audio-out (stereo headphone)√√
High-Definition Multimedia Interface (HDMI) version 1.3
Hot plug/unplug with auto-detect√√
RJ-11 (modem, select models only)√√
RJ-45 (Ethernet)√√
USB (3; one is an eSATA/USB port)√√
VGA (Dsub 15-pin) supporting 1600 × 1200 external
Multi-pin AC power√√
Keyboard/pointing devicesFull-size keyboard with numeric keypad, 43.9-cm (17.3-
TouchPad with 2 buttons and 2-way scroll (taps enabled
Digital Media Slot supporting SD, MMC, MS, MSPro, xD
cards. Supports mini versions of SD, MMC, MS Duo with
adapter, not included
supporting 1080p with High-bandwidth Digital Content
Protection (HDCP) key (select models only)
resolution at 75 Hz
in)
as default)
√√
√√
√√
√√
√√
ENWW3
CategoryDescriptionHP G72HP G72
DiscreteUMA
Power requirements6-cell, 2.20 Ah, 47 Wh battery√√
6-cell, 2.55 Ah, 55 Wh battery√√
6-cell, 2.8 Ah, 62 Wh battery√√
65-W AC adapter with localized cable plug support√
90-W AC adapter with localized cable plug support√
SecurityKensington Security Lock√√
Operating systemPreinstalled:
Windows® 7 Home Premium (32 & 64 bit)√√
Windows 7 Home Basic (32 & 64 bit)√√
Free DOS√√
ServiceabilityEnd-user replaceable parts:
AC adapter√√
Battery (system)√√
Hard drive√√
Memory module√√
Optical drive√√
Mini-card devices√√
4Chapter 1 Product descriptionENWW
2External component identification
Identifying the hardware
Components included with the computer might vary by region and model. The illustrations in this
chapter identify the standard features on most computer models.
To see a list of hardware installed in the computer:
1.Select Start > My Computer.
2.In the left pane of the System Tasks window, select View system information.
3.Select Hardware tab > Device Manager.
Add hardware or modify computer configurations using Device Manager.
ENWWIdentifying the hardware5
Top components
TouchPad
ComponentDescription
(1)TouchPad lightOff—Touchpad is on.
Amber—Touchpad is off.
(2)TouchPad zoneMoves the pointer and selects or activates items on the
(3)Left TouchPad buttonPress the left side of the TouchPad button to execute
(4)Right TouchPad buttonPress the right side of the TouchPad button to execute
*This table describes factory settings.
screen.
functions like the left button on an external mouse.
functions like the right button on an external mouse.
To view or change the pointing device preferences:
1.Select Start > Devices and Printers.
2.Right-click the device representing the computer.
3.Select Mouse settings.
6Chapter 2 External component identificationENWW
Lights
ComponentDescription
(1) TouchPad light●Off—TouchPad is enabled.
Amber—TouchPad is disabled.
●
(2)Caps lock lightOn—Caps lock is on
(3) Power light
(4) Wireless light●White—An integrated wireless device, such as a
(5)num lk light
On—The computer is on.
●
●Flashing—The computer is in Sleep.
Off—The computer is off or in Hibernation.
●
wireless local area network (WLAN) device and/or a
Bluetooth® device, is on.
●Amber—No wireless devices are detected.
On—The numeric function of the keypad is enabled.
●
●Off—The navigation function of the keypad is
enabled.
ENWWTop components7
Button and speakers
ComponentDescription
(1) Power button●When the computer is off, press the button to turn on
(2)Speakers grillTwo integrated speakers produce sound.
*This table describes factory settings. For information about changing factory settings, see the user guides located in Help
and Support.
the computer.
When the computer is on, press the button to initiate
●
Sleep.
When the computer is in Sleep, press the button to exit
●
Sleep.
●When the computer is in Hibernation, press the button
to exit Hibernation.
If the computer has stopped responding and Windows
shutdown procedures are ineffective, press and hold the
power button for at least five seconds to turn off the
computer.
To learn more about your power settings, select Start >
Control Panel > System and Security > Power Options.
8Chapter 2 External component identificationENWW
Keys
ComponentDescription
(1)esc keyDisplays system information when pressed in combination
with the fn key.
(2)fn keyDisplays system information when pressed in conjunction
with the esc key.
(3) Windows logo keyDisplays the Windows Start menu.
(4) Windows applications keyDisplays a shortcut menu for items where the cursor is
(5)Integrated numeric keypad keysUsed like the keys on an external numeric keypad.
(6)Action keysExecutes frequently-used system actions.
positioned
ENWWTop components9
Display
ComponentDescription
(1)Internal microphoneRecords sound.
(2)Integrated webcam (select models only)Records audio and video and captures still photographs.
(3)Webcam light (select models only)On—The webcam is in use.
10Chapter 2 External component identificationENWW
Right-side components
ComponentDescription
(1) Optical driveReads and writes to optical discs.
(2)Optical drive light on release buttonFlashing—The optical drive light is being accessed.
(3)USB portConnects an optional USB device.
(4)RJ-11 (modem) jack (select models only)Connects a modem cable.
(5)AC adapter light●Flashing white—The computer is in Sleep.
On white—The computer is connected to external power.
●
Flashing amber—The computer is charged.
●
●Off—The computer is not connected to external power.
(6)Power connectorConnects an AC adapter.
(7)Security cable slotAttaches an optional security cable to the computer.
NOTE: The security cable is designed to act as a deterrent,
but it might not prevent the computer from being mishandled
or stolen.
ENWWRight-side components11
Left-side components
ComponentDescription
(1)External monitor portConnects an external VGA monitor or projector.
(2)VentEnables airflow 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 off during routine
operation.
(3)HDMI port (select models only)Connects an optional video or audio device, such as a
high-definition television, or any compatible digital or audio
component.
NOTE: Depending on the computer model, the computer
might include an HDMI port or a USB port at this location.
(4)Network connection lightWhite—The computer is connected to the network.
(5)RJ-45 (network) jackConnects a network cable.
(6)Network activity lightAmber—Data is being transmitted over the network.
(7)USB ports (2)Connects an optional USB devices.
(8)Audio-in (microphone) jackConnects an optional computer headset microphone,
(9)Audio-out (headphone) jackProduces sound when connected to optional powered
(10)Digital Media Slot (select models only)Supports the following optional digital card formats:
stereo array microphone, or monaural microphone.
stereo speakers, headphones, earbuds, a headset, or
television audio.
●Memory Stick (MS)
●Memory Stick Pro (MSP)
●MultiMediaCard (MMC)
Secure Digital (SD) Memory Card
●
xD-Picture Card (XD)
●
(11)Drive lightOn—The hard drive is in use.
12Chapter 2 External component identificationENWW
Bottom components
ComponentDescription
(1)Battery bayHolds the battery.
(2)Vents (5)Enable airflow to cool internal components.
(3)Battery release latchReleases the battery from the battery bay.
(4)Hard drive bayHolds the hard drive.
(5)Memory module compartmentContains two memory module slots and, on select
Wireless antennas
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.
models, the wireless LAN (WLAN) device.
CAUTION: To prevent an unresponsive system, replace
the wireless module only with a wireless module
authorized for use in the computer by the governmental
agency that regulates wireless devices in your country or
region. If you replace the module and then receive a
warning message, remove the module to restore
computer functionality, and then contact technical support
through Help and Support.
At least two antennas send and receive signals from one or more wireless devices. These antennas
are not visible from the outside of the computer.
ENWWBottom components13
NOTE:For optimal transmission, keep the areas immediately around the antennas free from
obstructions.
To review the wireless regulatory notices, see to the section of the Regulatory, Safety andEnvironmental Notices that applies to your country or region. These notices are located in Help and
Support.
14Chapter 2 External component identificationENWW
Additional hardware components
ComponentDescription
(1)Power cord*Connects an AC adapter to an AC outlet.
(2)AC adapterConverts AC power to DC power.
(3)Battery*Powers the computer when the computer is not plugged into
*Power cords vary in appearance by country or region.
external power.
ENWWAdditional hardware components15
16Chapter 2 External component identificationENWW
3Illustrated parts catalog
Serial number location
When ordering parts or requesting information, provide the computer serial number and model
number located in the battery bay of the computer.
ComponentDescription
(1)Product nameThe name affixed to the front of the computer.
(2)Serial number (s/n)An alphanumeric identifier that is unique to each product.
(3)Part number/Product number (p/n)This number provides specific information about the product’s
(4)Warranty periodThe duration of the warranty period for the computer.
(5)Model descriptionAn alphanumeric identifier used to locate documents, drivers, and
ENWWSerial number location17
hardware components. The part number helps a service technician
to determine what components and parts are needed.
support for the computer.
Computer major components
18Chapter 3 Illustrated parts catalogENWW
ItemDescriptionSpare part number
(1)43.9-cm (17.3-in) High Definition (HD), light-emitting diode (LED) display assembly
for use in:
NOTE: For more display assembly internal component spare part information, see
Display assembly components on page 24.
●Biscotti computer models612094–001
(2)Keyboard (includes keyboard cable) for use in:
●Czech Republic (for models 1.0 and 1.1 only)615850-221
●Germany (for models 1.0 and 1.1 only)615850-041
●for International use (for models 1.0 and 1.1 only)615850-B31
Matte black computer models612095-001
●
Charcoal computer models (for models 1.1 and 1.2 only)620538-001
●
Adriatics (for models 1.0 and 1.1 only)615850-BA1
●
Belgium (for models 1.0 and 1.1 only)615850-A41
●
France (for models 1.0 and 1.1 only)615850-051
●
French Canada (for model 1.1 only)615850-121
●
Greece (for models 1.0 and 1.1 only)615850-DJ1
●
Hungry (for models 1.0 and 1.1 only)615850-211
●
●Norway (for models 1.0 and 1.1 only)615850-DH1
●Saudi Arabia (for models 1.0 and 1.1 only)615850-171
●Turkey (for models 1.0 and 1.1 only)615850-141
(3)Power button board616495-001
(4)Speaker assembly (includes cable)616498-001
(5)Top cover (includes TouchPad board) for use in:
●Biscotti computer models616490-001
Israel (for models 1.0 and 1.1 only)615850-BB1
●
Italy (for models 1.0 and 1.1 only)615850-061
●
Portugal (for models 1.0 and 1.1 only)615850-131
●
Russia (for models 1.0 and 1.1 only)615850-251
●
Spain (for models 1.0 and 1.1 only)615850-071
●
Switzerland (for models 1.0 and 1.1 only)615850-BG1
●
United Kingdom (for models 1.0 and 1.1 only)615850-031
●
United States (for models 1.1 and 1.2 only)615850-001
●
Matte black computer models616492-001
●
(6)Touchpad button board (includes bracket and cable)616493-001
Charcoal computer models (for models 1.1 and 1.2 only)620542-001
●
ENWWComputer major components19
ItemDescriptionSpare part number
(7)Fan/heat sink assembly (includes replacement thermal material) for use with: