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Notice

This manual and any examples contained herein are provided “as is” and are subject to change without
notice. Hewlett-Packard Company makes no warranty of any kind with regard to this manual,
including, but not limited to, the implied warranties of merchantability and fitness for a particular
purpose. Hewlett-Packard Co. shall not be liable for any errors or for incidental or consequential
damages in connection with the furnishing, performance, or use of this manual or the examples herein.

Consumer transactions in Australia and the United Kingdom: The above disclaimers and limitations
shall not apply to Consumer transactions in Australia and the United Kingdom and shall not affect the
statutory rights of Consumers.

© Copyright Hewlett-Packard Company 2000–2002. All rights reserved. Reproduction, adaptation, or
translation of this manual is prohibited without prior written permission of Hewlett-Packard Company,
except as allowed under the copyright laws.

The programs that control this product are copyrighted and all rights are reserved. Reproduction,
adaptation, or translation of those programs without prior written permission of Hewlett-Packard Co.
is also prohibited.

Portions of the programs that control this product may also be copyrighted by Microsoft Corporation,
SystemSoft Corp., Insyde Software Corporation, S3 Graphics Incorporated, and Adobe Systems
Incorporated. See the individual programs for additional copyright notices.

This product incorporates copyright protection technology that is protected by method claims of
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other rights owners. Use of this copyright protection technology must be authorized by Macrovision
Corporation and is intended for home and other limited viewing uses only unless otherwise authorized
by Macrovision Corporation. Reverse engineering or disassembly is prohibited.

Microsoft®, MS-DOS®, and Windows® are U.S. registered trademarks of Microsoft Corporation.
Pentium® and the Intel Inside logo are U.S. registered trademarks and Celeron™ and SpeedStep™
are U.S. trademarks of Intel Corporation. Adobe® and Acrobat® are trademarks of Adobe Systems
Incorporated.

All certifications may not be completed at product introduction.
This equipment is subject to FCC rules. It will comply with the appropriate FCC rules before final

delivery to the buyer.

Hewlett-Packard Company
HP Notebook Customer Care
1000 NE Circle Blvd., MS 425E
Corvallis, OR 97330, U.S.A.

Edition History

Edition 1.........................January 2002

ii zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Contents

Product Information.........................................................................................................5

Notebook Features............................................................................................................................5

Operating the Notebook.................................................................................................................10

Turning the Notebook On and Off...........................................................................................10

Resetting the Notebook...........................................................................................................11

Changing the Boot Device.......................................................................................................11

Hardware Specifications.................................................................................................................12

Troubleshooting and Diagnostics...................................................................................15

Audio Problems.......................................................................................................................15

CD and DVD Problems...........................................................................................................16

Display Problems.....................................................................................................................17

Floppy Disk Drive Problems...................................................................................................19

Hard Disk Drive Problems ......................................................................................................19

Heat Problems .........................................................................................................................20

Infrared Problems.................................................................................................................... 20

Keyboard and Pointing Device Problems................................................................................20

LAN Problems.........................................................................................................................21

Memory Problems...................................................................................................................22

Modem Problems.....................................................................................................................22

One-Touch Button Problems................................................................................................... 24

Parallel and USB Problems.....................................................................................................25

PC Card (PCMCIA) Problems ................................................................................................ 26

Performance Problems.............................................................................................................26

Power and Battery Problems ...................................................................................................27

Printing Problems.................................................................................................................... 29

Startup Problems .....................................................................................................................29

Standby and Resume Problems ...............................................................................................30

Wireless Problems...................................................................................................................30

Using the e-Diagtools Diagnostic Tests.........................................................................................32

Using the BIOS Configuration Utility............................................................................................33

Reinstalling and Updating Software..............................................................................37

Recovering the Factory Software Installation................................................................................37

Updating the Notebook BIOS ........................................................................................................38

Updating the Windows Drivers...................................................................................................... 38

Removing and Replacing Parts......................................................................................39

Removing the Battery.....................................................................................................................40

Removing the Optical Drive Module.............................................................................................41

Removing the Hard Disk Drive......................................................................................................42

Removing the Mini-PCI Card ........................................................................................................44

Removing the Keyboard Cover......................................................................................................46

Removing the Keyboard.................................................................................................................48

Removing an SDRAM Module......................................................................................................50

Removing an Expansion SDRAM Module.............................................................................50

Removing the System SDRAM Module ................................................................................. 51

Removing the Speakers..................................................................................................................52

Removing the Fan..........................................................................................................................53

Replacing Small Parts and Accessories.......................................................................................... 55

zt1100/xz100 and xt1000 Series iii
Troubleshooting and Self-Repair Guide

Reference Information....................................................................................................57

Password Removal Policy.............................................................................................................. 57

Hewlett-Packard Display Quality Statement.................................................................................. 57

Figures

Figure 1. Front View............................................................................................................................... 5

Figure 2. Back View............................................................................................................................... 6

Figure 3. Bottom View............................................................................................................................7

Figure 4. Main Status Lights................................................................................................................... 8

Figure 5. Keyboard Status Lights............................................................................................................ 9

Figure 6. Multimedia Buttons and Status Panel (selected models)......................................................... 9

Figure 7. Pressing the Reset Switch...................................................................................................... 11

Figure 8. Removing the Battery............................................................................................................ 40

Figure 9. Releasing the Plug-in Module ............................................................................................... 41

Figure 10. Removing the Hard Disk Drive........................................................................................... 42

Figure 11. Removing the Hard Disk Tray............................................................................................. 43

Figure 12. Removing the Mini-PCI Card.............................................................................................. 45

Figure 13. Removing the Keyboard Cover Retaining Screws.............................................................. 46

Figure 14. Removing the Keyboard Cover........................................................................................... 47

Figure 15. Loosening the Keyboard Retaining Screws......................................................................... 48

Figure 16. Disconnecting the Keyboard................................................................................................ 49

Figure 17. Removing an Expansion SDRAM Module ......................................................................... 50

Figure 18. Installing an Expansion SDRAM Module........................................................................... 51

Figure 19. Removing the System SDRAM Module ............................................................................. 51

Figure 20. Removing the Speakers ....................................................................................................... 52

Figure 21. Removing the Fan................................................................................................................ 54

Tables

Table 1. Battery Replacement Part Numbers........................................................................................ 40

Table 2. Optical Drive Module Replacement Part Numbers................................................................. 41

Table 3. Hard Disk Drive Replacement Part Numbers......................................................................... 42

Table 4. Mini-PCI Card Replacement Part Numbers............................................................................ 44

Table 5. Keyboard Cover Replacement Part Numbers......................................................................... 46

Table 6. Keyboard Replacement Part Numbers.................................................................................... 48

Table 7. SDRAM Module Replacement Part Numbers........................................................................ 50

Table 8. Speaker Replacement Part Numbers....................................................................................... 52

Table 9. Fan Replacement Part Numbers..............................................................................................53

Table 10. Replacing Small Parts........................................................................................................... 55

Table 11. Accessories ........................................................................................................................... 55

iv zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Product Information

This section introduces the notebook and its components, and briefly describes basic operation.

Notebook Features

Figure 1. Front View

1. One-Touch buttons (programmable).

2. Power button.

3. Keyboard status lights: Caps Lock, Num Lock,
CD/DVD drive activity.

4. Touch pad/scroll pad on-off button (with on-off
indicators on either side).

5. Left and right click buttons.

6. Touch pad.

7. Scroll pad.

zt1100/xz100 and xt1000 Series Product Information 5
Troubleshooting and Self-Repair Guide

8. Volume controls (selected models).

9. Mute button and indicator light (selected models).

10. Removable DVD or DVD/CD-RW drive.

11. CD/DVD eject button.

12. Speaker (one on each side).

13. Latch.

14. Built-in microphone.

Figure 2. Back Vie w

15. AC adapter jack.

16. Parallel port (LPT1) (colored burgundy).

17. External monitor (VGA) port (colored blue).

18. S-video (TV out) port (colored yellow)
(selected models).

19. Universal serial bus (USB) ports (2).

20. Audio line-out jack (colored lime green) and
external microphone jack (colored pink).

21. Reset switch.

22. Kensington lock slot (security connector).

23. LAN port and indicators.

24. Modem port (selected models).

25. IEEE 1394 connector (selected models).

26. PC Card slot (Type II or Type III, lower slot only).

27. PC Card eject button.

28. Hard disk drive.

29. Wireless on-off button and indicator light
(selected models).

30. Universal serial bus (USB) port.

31. Headphones jack (colored lime green).

6 Product Information zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Figure 3. Bottom Vi ew

32. Infrared port (selected models).

33. Battery.

34. CD/DVD drive latch.

35. RAM cover.

36. Battery latch.

37. Docking port.

38. Mini-PCI cover (no user-

replaceable parts inside).

39. Hard disk drive retaining screws.

zt1100/xz100 and xt1000 Series Product Information 7
Troubleshooting and Self-Repair Guide

Figure 4. Main Stat us Lights

1. Hard disk drive activity.

• On: the notebook is accessing the hard disk drive.

2. Power mode.

• Green: the notebook is on (even if the display is off).

• Amber: the notebook is on standby.

• Off: the notebook is off or in hibernation.

3. Battery charge status.

• Green: the AC adapter is connected and the battery is fully charged.

• Amber: the AC adapter is connected and the battery is charging.

• Red: the AC adapter is connected and the battery has a fault.

• Off: the AC adapter is not connected or the battery is missing.

8 Product Information zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Figure 5. Keyboard Status Lights

1. Caps Lock. Caps Lock is active.

2. Num Lock. Num Lock is active. (The Keypad Lock must also be on to use the

embedded keypad.)

3. CD/DVD drive activity. The drive is active.

Figure 6. Multimedia Buttons and Status Panel (selected models)

1. MP3 player launch button.

2. Previous track button.

3. Next track button.

4. Status panel button.

5. Status panel.

6. Play/Pause button.

7. Stop button.

8. Multimedia power switch and
indicator light.

zt1100/xz100 and xt1000 Series Product Information 9
Troubleshooting and Self-Repair Guide

Operating the Notebook

Note

This manual describes the notebook in its original factory configuration, with all settings at their
default values.

Turning the Notebook On and Off

Power mode To enter this mode To turn on again
On

Power mode status light is green.
Standby

Maintains current session in RAM.
Turns off the display and other components.
Saves significant power.
Restarts quickly.
Restores network connections.
Power mode status light is amber.

Hibernation
Saves current session to disk, then turns off.
Saves maximum power.
Restores network connections.
Power mode status light is off.

Turn off
Turns off without saving current session.
Saves maximum power.
At startup, resets everything, and starts a new
session.
Power mode status light is off.

Press the power button.

Click Start, Turn Off Computer,
Stand By.
–or–
Press the power button.
–or–
Allow timeout.

Click Start, Turn Off Computer,
then press and hold Shift and
click Hibernate.
–or–
Allow timeout.

Click Start, Turn Off Computer,
Turn Off.
–or–
Press and hold the power
button for four seconds (only
if the Start menu procedure
doesn’t work).

Press the power button to
quickly resume your
session.

Press the power button to
resume your session.

Press the power button to
start with a new session.

10 Product Information zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Resetting the Notebook

If Windows or the notebook stops responding and you cannot turn the notebook off, try the following
in the order listed. Press the power button to restart.

• If possible, restart or turn off the notebook from within Windows: click Start, Turn Off Computer,

Restart (or Turn Off).

• Press Ctrl+Alt+Del, then click Shut Down, Restart (or Turn Off).

• Press and hold the power button for about four seconds.

• Use a pen or straightened paper clip to press the reset switch on the back of the notebook.

Figure 7. Pressing the Reset Switch

Changing the Boot Device

The notebook normally boots from its internal hard disk. You can also boot the notebook from an
external USB floppy disk drive (optional accessory), the CD/DVD drive, or a local area network
(LAN).

1. Restart the notebook: click Start, Turn Off Computer, Restart.

2. When the HP logo appears, press Esc to display the Boot menu.

3. Use the arrow keys to select the boot device, and press Enter.

If you want to boot from a specific device whenever it is present, change the boot order using the
BIOS configuration utility—see “Using the BIOS Configuration Utility” on page 33.

zt1100/xz100 and xt1000 Series Product Information 11
Troubleshooting and Self-Repair Guide

Hardware Specifications

The specifications shown below are subject to change. For the latest specifications, see the HP
Notebook web site (www.hp.com/notebooks).

Physical Attributes Dimensions:

13.3/14.1-in models: 318 × 273 × 35.8 mm (12.5 × 10.75 × 1.4 in).
15-in models: 330 × 278 × 37.5 mm (12.99 × 10.94 × 1.47 in).
Thickness varies across unit.

Starting travel weight: 2.3 kg (5.0 lbs) minimum, depending on model.

Processor and
Bus Architecture

Graphics

Power

Mass Storage

CD/DVD drive
RAM

Audio System

Keyboard and
Pointing Devices

Intel Mobile Pentium III-M processor (starting at 933 MHz) with SpeedStep technology.
–or–
Intel Celeron processor (starting at 866 MHz).

1.6-V core, 2.5-V external, low-power processor.
32-bit PCI bus.

13.3/14.1/15-in XGA (1024x768) or 15-in SXGA+ (1400x1050) TFT LCD display.
Supports 16 million colors, 3D and OpenGL graphics.
Supports hardware acceleration for MPEG. Display driver supports MPEG2 overlay.
Supports simultaneous LCD+CRT operation (same image on both displays).
Integrated VGA.
Up to 32-MB video memory (shared with system memory).
Supports NTSC and PAL TV.
Dual display for LCD and external monitor or TV.

Rechargeable lithium-ion or NiMH battery.
Battery life depends on notebook type and usage, and battery type and calibration.
Low-battery warning.
Standby/hibernate and resume capability.
Universal AC adapter: 100–240 Vac (50/60 Hz) input, 19 Vdc output, 60 W.

10- to 40-GB removable IDE hard disk drive.
Supports optional 1.44-MB floppy disk drive module.

8X DVD or 8X8X24X8 DVD/CD-RW (or higher) removable drive.
Two slots for SDRAM expansion (SODIMM, PC133) up to 1024 MB (2x512MB).

133-MHz RAM bus.
Built-in microphone.

Stereo sound through two built-in speakers. 1.5 W per channel.
Polk Audio certified on 15-in models.
Dedicated mute and volume controls (selected models).
CD player (can play while notebook is on standby, in hibernation, or off).
3D-enhanced PCI bus audio.

87/88/91-key touch-type QWERTY keyboard with 101/102 key emulation.
Embedded numeric keypad.
12 function (Fn) keys.
5 user-programmable One-Touch buttons.
Touch pad with lock button and on-off indicator.
Left and right click buttons, vertical scroll pad.

12 Product Information zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Input/Output

Expandability

Security Features

Environmental Limits

Major ICs

3 universal serial bus (USB) ports.
15-pin VGA video-out (blue) with DDC support. (Resolution up to 1600×1200×64K or
16M colors. Refresh rate of 60 to 100 Hz, depending on resolution and color depth.)
RJ-45 LAN jack.
25-pin bi-directional high-speed ECP/EPP parallel (burgundy).
S-video TV out (yellow) (selected models).
4-Mbps IrDA-compliant infrared port (selected models).
IEEE 1394 port (selected models).
Docking port: supports optional simple port replicator.

One Type II or Type III 16/32-bit PC Card slot (3.3- and 5-V support).
CardBus enabled.
Optional simple port replicator (selected models).

User and administrator passwords.
DMI-accessible electronic serial number.
Kensington MicroSaver lock slot.

Operating temperature: 0 to 40 °C (32 to 104 °F).
Operating humidity: 10 to 90 percent RH (0 to 45 °C).
Operating altitude: up to 10,000 ft (3000 m) at 25 °C (77 °F).
Storage (non-operating) temperature: –20 to 65 °C (–4 to 149 °F).

CPU: Intel Mobile Pentium III or Celeron processor.
North Bridge: VIA Pro Savage Pn 133T.
South Bridge: VIA VT8231.
Display controller: S3 Savage 4 in North Bridge.
Audio controller: VIA/Realtek ALC201 AC97 Codec.
CD player controller: O2 OZ-163.
LAN: Realtek RTL8100L.
CardBus controller: ENE 1410.
Keyboard/embedded controller: National NS87591.
Super I/O: in South Bridge.

zt1100/xz100 and xt1000 Series Product Information 13
Troubleshooting and Self-Repair Guide

Troubleshooting and Diagnostics

This section contains solutions to several types of problems you may encounter when using the
notebook. Try the solutions one at a time, in the order in which they are presented.

You can also find technical tips and software updates for the notebook at the HP Business Support
web site (www.hp.com/go/bizsupport).

Audio Problems

If no sound is audibl e

• Press Fn+Page Up several times.

• If available, press the rear volume control several times.

• Click the speaker icon on the taskbar (if present), and make sure Mute is not checked and the

Volume slider is not set to the bottom.

• If available, press the mute button on the right side of the notebook once or twice until the

indicator light goes off.

• The notebook’s sound may not operate properly in MS-DOS mode.

If sound does not rec ord

• Check the software controls for recording sound: click Start, All Programs, Accessories,

Entertainment, Sound Recorder.

• In Volume Control, click Options, Properties, and make sure the microphone is enabled in the

recording controls.

• Test the audio with the e-Diagtools diagnostics— see “Using the e-Diagtools Diagnostic Tests”

on page 32.

If you hear a loud high-pitched whine (feedback) from the speakers

• In Volume Control, try reducing the master volume.

• In Volume Control, click Options, Properties, and select the microphone option for the playback

settings. Make sure the microphone is muted.

• Avoid using the built-in microphone and built-in speakers at the same time.

zt1100/xz100 and xt1000 Series Troubleshooting and Diagnostics 15
Troubleshooting and Self-Repair Guide

CD and DVD Problems

If you can’t boot fro m a CD in the CD/DVD driv e

• Make sure the CD is bootable, such as a Re covery C D.

• Make sure the CD-ROM/DVD drive is selected as the boot device—see “Changing the Boot

Device” on page 11.

• Restart the notebook.

• Test the CD/DVD drive with the e-Diagtools diagnostics— see “Using the e-Diagtools Diagnostic

Tests” on page 32.

If a CD or DVD plays erratically

• Dirt or smudges can cause a disk to skip. Clean the disk with a soft cloth. If the disk is badly

scratched, it may have to be replaced.

• Some DVDs include software called “PC Friendly.” You generally should not install this

software, as it can cause errors or erratic play. If needed, uninstall it and restart the notebook.

If a DVD movie stops playing in the middle

• You may have accidentally paused the DVD movie. Press the Play button to resume.

• The DVD may be double-sided. Open the DVD tray, and read the text near the center of the disk.

If it says Side A, flip the disk over, close the tray, and press the Play button to continue playing
the movie.

If you get a Region Code error when pl aying a DVD movie

• DVDs have regional codes embedded in their disk data. These codes prevent DVD movies from

being played outside the region of the world in which they are sold. If you get a Region Code
error, you are trying to play a DVD intended for a different region.

Important: Most DVD drives let you change the region code only a limited number of times
(usually no more than four) to allow you to set the proper region code for your area. Please note
that when you reach this limit, your last change to the region code will be hard-coded on the DVD
drive, and will be permanent. The HP warranty does not cover the expense of correcting this

situation.

Refer to the help for the DVD player software for details about setting region codes.

If the notebook cannot read a C D or D V D

• For a single-sided CD or DVD, make sure the disk is placed in the drive with the label facing up.

• Clean the disk with a soft cloth.

• Wait 5 to 10 seconds after closing the tray for the notebook to recognize the disk.

• Remove the disk from the drive, then restart the notebook.

• If you created the CD on a CD-RW drive, try using a different media brand. For best results use

HP certified media. While other media may work, HP cannot guarantee compatibility.

16 Troubleshooting and Diagnostics zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

If a DVD movie doesn’t fill the screen

• Each side of a double-sided DVD has a different format (standard or widescreen). In widescreen

format, black bands appear at the top and bottom of the screen. To view the standard format, flip
the disk over and play the other side.

If you have problems with display r esolution or color depth while playing a DVD

• Set the display resolution and color depth before starting the DVD player. You cannot change

these once the DVD player is started.

• Some combinations of color depth and resolution are not supported in DVD playback. If needed,

reduce color depth or display resolution.

If a DVD doesn’t play with two displays

• Before starting the DVD player, press Fn+F5 to switch to one display. You cannot switch displays

once the DVD player is started.

• If you’re using both displays, the DVD image will not appear on any display set up as

“secondary”. Click Start, Control Panel, Appearance and Themes, Display. Click Advanced on

the Settings tab, then click the S3Display tab and change settings.

Display Problems

If the notebook is on, but the screen is blank

• Move the mouse or tap the touch pad or scroll pad. This will wake the display if it is off.

• Try pressing Fn+F2 to increase the display brightness.

• Press Fn+F5 in case the internal display was disabled. (Do this three times to return to the state

you started from.)

• If the notebook is cold, allow it to warm up.

If the screen is difficult to read

• Try setting the display resolution to its default setting of 1024×768: click Start, Control Panel,

Appearance and Themes, Display, Settings.

If part of the Windows desktop is not vi sible and you have to scroll down to see the
taskbar, or does not fill the entire display and has a black border

• The display resolution may be set incorrectly. Adjust as needed.

If an external display does not work

• Check the connections.

• Press Fn+F5 in case the external monitor was disabled. (Do this three times to return to the state

you started from.)

• Test the display with the e-DiagTools diagnostics— see “Using the e-Diagtools Diagnostic Tests”

on page 32.

zt1100/xz100 and xt1000 Series Troubleshooting and Diagnostics 17
Troubleshooting and Self-Repair Guide

If one or more display pixels look bad

TFT display manufacturing is a highly precise but imperfect technology, and manufacturers cannot
produce displays that are cosmetically perfect. Most, if not all, TFT displays exhibit some level of
cosmetic imperfection. These cosmetic imperfections may be visible under varying display conditions,
and can appear as bright, dim, or dark spots. This issue is common across all vendors supplying TFT
displays in their products and is not specific to the HP notebook display.

HP notebook TFT displays meet or exceed all HP standards for cosmetic quality of TFT displays. HP
does not warrant that the displays will be free of cosmetic imperfections. TFT displays can have a
small number of cosmetic imperfections and still conform to HP’s cosmetic quality specifications,
including the following:

• No more than 6 pixels remain on (always one color, such as white, red, green, or blue dots).

• No more than 6 pixels remain off (always dark).

• No more than a total of 8 pixels stuck on or off.

• No other stuck pixel within 15 mm of a stuck pixel.

Refer to HP Customer Care for a more comprehensive explanation of HP display quality. We expect
that over time the industry will continue to produce displays with fewer inherent cosmetic
imperfections, and we will adjust our HP guidelines as these improvements are implemented.

If you have problems with display r esolution or color depth while playing a DVD or a
video file in AVI or MPEG format

• Set the display resolution and color depth before starting the DVD or video file player. You

cannot change these settings once the player is started.

• Some combinations of color depth and resolution are not supported in DVD or AVI playback. If

needed, reduce color depth or display resolution.

If a DVD or a video file in AVI or MPEG format doesn’t play with two displays

• Before starting the DVD or video file player, press Fn+F5 to switch to one display. You cannot

switch displays once the player is started.

• If you’re using both displays, the DVD or video image will not appear on any display set up as

“secondary”. Click Start, Control Panel, Appearance and Themes, Display. Click Advanced on

the Settings tab, then click the S3Display tab and change settings.

If you have display problems while usi ng a TV set as a monitor

• The notebook’s S-video (TV-out) port is optimized for DVD display. Performance may vary

when using the S-video port for other applications.

• Before using a TV set as a monitor, switch the notebook’s display resolution to 800 by 600 pixels:

1. Connect a video cable from the TV set to the notebook’s S-video port (colored yellow) on
the back of the notebook. (You don’t need to turn the notebook off to do this.)

2. Turn on the TV.

3. Click Start, Control Panel, Appearance and Themes, Display, Settings, then click the
Advanced button.

4. On the S3Display tab, select TV as the Display Device, then click OK.

5. Set the screen resolution to 800 by 600 pixels, then click OK.

18 Troubleshooting and Diagnostics zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

If you have display problems while usi ng a simple port repli cator or a CRT monitor

• If you dock to a simple port replicator or attach a CRT monitor while the notebook is off, the

notebook may not properly recognize the CRT when you restart the notebook, although its LCD
display will be active. If this happens, select your preferred display device either of these ways:

• Press Fn+F5 repeatedly.

• Click Start, Control Panel, Appearance and Themes, Display, Settings, then click the

Advanced button. On the S3Display tab, select the Display Device you want, then click OK.

Floppy Disk Drive Problems

If a floppy drive connected to the USB por t doesn’t work

• Make sure the drive is securely connected to the notebook.

• Restart the notebook: click Start, Turn Off Computer, Restart.

Hard Disk Drive Problems

If the notebook’s hard drive doesn’t spin

• Make sure the notebook has power. If necessary, connect the AC adapter, and make sure it is fully

plugged into a power source and into the back of the notebook.

• Remove and reinsert the hard drive—see “Removing the Hard Disk Drive” on page 42.

If the hard disk makes a buzzing or whini ng noise

• Important: Back up the drive immediately.

• See whether the noise is coming from elsewhere, such as the fan or a PC Card drive.

If files are corrupted

• Check the hard disk: open My Computer, select the disk you want to scan, click File, Properties,

and use the Tools tab.

• Run the Norton AntiVirus program.

• Test the hard disk drive with the e-DiagTools diagnostics—see “Using the e-Diagtools Diagnostic

Tests” on page 32.

• If necessary, format the hard disk and reinstall the original factory software—see “Recovering the

Factory Software Installation” on page 37.

If the hard drive’s reported capacity is less than its actual size

• The hard disk drive is preconfigured to allocate some space to diagnostic software, which is used

in support and service of your notebook. This part of the hard drive is unavailable for other uses,
and so is not included in the capacity of the hard drive as reported by Windows (My Computer,
Properties).

zt1100/xz100 and xt1000 Series Troubleshooting and Diagnostics 19
Troubleshooting and Self-Repair Guide

Heat Problems

Keep in mind that your notebook normally gets warm during routine operation. Charging the battery
and running games and other programs that drive CPU usage toward 100% can further increase the
notebook’s temperature.

If the notebook gets un usually warm

• Always set the notebook on a firm, flat surface, so that air can flow freely around and beneath it.

• Make sure the air vents on the right side and back of the notebook are clear.

• Make sure the fan is working properly. If needed, test the fan’s operation with the e-DiagTools

diagnostics— see “Using the e-Diagtools Diagnostic Tests” on page 32.

Infrared Problems

If you have problem s with infrared communication

• Make sure the line between the two infrared ports is not blocked, and that the ports face each

other as squarely as possible. The ports should be no more than 1 meter apart, with no
obstructions between them. Sunlight, heat from nearby equipment, and other sources of infrared
radiation can also interfere with infrared communications.

• Make sure only one application is using the infrared port.

Keyboard and Pointing Device Problems

If the pointer is difficult to control

• Adjust the pointer controls: click Start, Control Panel, Printers and Other Hardware, Mouse.

If the touch pad or scr oll pad doesn’t work

• Don’t use the touch pad or scroll pad while the notebook is rebooting or resuming. If this happens,

try the following:

• Press any key on the keyboard.

• Put the notebook on standby, then resume operation.

• The touch pad and scroll pad are automatically disabled when the notebook is docked in a port

replicator that has a PS/2 mouse connected.

• Restart the notebook: click Start, Turn Off Computer, Restart.

• Check settings: click Start, Control Pad, Printers and Other Hardware, Mouse, Scrolling.

• Test the keyboard and pointing devices with the e-DiagTools diagnostics— see “Using the e-

Diagtools Diagnostic Tests” on page 32.

If the embedded numer ic keypad doesn’t work

• To type numbers, make sure Num Lock is on.

• Make sure the embedded Keypad Lock (Fn+F8) is on—or that you press and hold the Fn key to

temporarily access the embedded keypad.

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If you can’t type the euro symbol

• Hold Alt GR when you press the marked key.

• The euro symbol is not on the U.S. English keyboard. Make sure the embedded keypad is active

(Fn+F8) and Num Lock is on, then press and hold Alt while typing 0128 on the numeric keypad.

• Support for the euro symbol requires software available from Microsoft. This software is installed

in the factory software, but may not be included with retail Windows.

If a special feature on a USB mouse doesn’t work

• Make sure you installed any drivers included with the mouse.

• Restart the notebook, so that it will detect the mouse.

LAN Problems

If the built-in net work adapter doesn’t conn ect to the LAN

• Check all cables and connections. Try connecting at a different network station, if available.

• If the green light next to the LAN port does not light, the LAN cable may not be connected to the

network or the network may be down. Try connecting a different computer to the cable.

• Use the networking problems troubleshooter in Windows Help and Support.

• Click Start, Control Panel, Performance and Maintenance, System. On the Hardware tab, open the

Device Manager. If the network interface is disabled, try to enable it. If it has a conflict, try
disabling another device.

• Click Start, Control Panel, Network and Internet Connections, Network Connections. Make sure

you have the correct clients and protocols installed.

• Make sure the LAN cable is Category 3, 4, or 5 for 10Base-T operation, or Category 5 for

100Base-TX operation. Maximum cable length is 100 meters (330 feet).

If you can’t bro wse My Network Places

• Click Start, Search to look for a computer.

If you can’t log i n to Netware servers

• If a Netware server is using IPX/SPX protocol, you may need to force your frame type to match

the server’s frame type. Check with your network administrator.

If the notebook stops responding after booting

• Check whether you have a TCP/IP network with no DHCP server. This can cause a long delay at

startup because DHCP is enabled. Contact your network administrator to determine the proper
TCP/IP configuration.

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Memory Problems

If a message says you are out of mem ory

• Make sure drive C is not running low on free space.

• Use the memory troubleshooter in Windows Help and Support.

• If you are having memory problems while running MS-DOS programs, use the application and

software problems troubleshooter in Windows Help and Support.

• Not all third-party memory cards have been tested for use with the notebook. Check the HP

Notebook web site (www.hp.com/notebooks) for a list of approved and tested memory cards.

• Test the notebook’s memory with the e-DiagTools diagnostics— see “Using the e-Diagtools

Diagnostic Tests” on page 32.

If memory doesn’t increase after adding RAM

• Make sure the notebook is using only PC133 RAM modules.

Modem Problems

If the modem seems slow

• Check for excess static or noise on the line, which reduces the overall transmission speed. If

necessary, contact your telephone company about fixing this type of problem. (When dialing
internationally, line noise can be difficult to eliminate.)

• If you have call-waiting, disable it—your telephone company can provide instructions.

• Eliminate extra connections in the line. If possible, connect directly to the wall jack.

• Try another telephone line, preferably one normally used for a fax machine or modem.

If the modem doesn’t dial or no dial tone is detected

• Check all cables and connections.

• Connect a standard telephone to the phone line and make sure the line is working.

• Make sure someone else isn’t using the same phone line.

• Try another telephone line, preferably one normally used for a fax machine or modem.

• If you’re in a foreign country, the dial tone may not be recognized by the modem. Click Start,

Control Panel, Printers and Other Hardware, Phone and Modem Options. Select your modem on
the Modems tab, then click Properties, Modem, and disable the option that waits for a dial tone.

• Many countries impose a blackout period after a modem repeatedly fails to connect to a service

provider. The number of failed attempts and the period you must wait before trying again differ
from country to country: check with your telephone company.

For example, if you are dialing from Italy and fail to connect to your server or cancel the
connection, you must wait one minute before dialing that number again. If you dial before then,
you will get an error message that says “delay.” After the fourth failed connection, you must wait
one hour before trying the number again. If you dial before the hour is up, you will get a message
that says “black list.”

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If the modem dials incorrectly

• Check the telephone number you entered, including any digits required for outside access or long

distance.

• In Control Panel, open Phone and Modem Options, and check the dialing options—look for

duplicate digits for outside access or long distance.

• Make sure the number you’re calling isn’t busy.

• If you’re in a foreign country, the dial tone may not be recognized by the modem. Click Start,

Control Panel, Printers and Other Hardware, Phone and Modem Options. Select your modem on
the Modems tab, then click Properties, Modem, and disable the option that waits for a dial tone.

• If you have call-waiting, disable it—your telephone company can provide instructions.

If the modem dials but doesn’t connect

• Make sure you’re using an analog telephone line. You must not use a digital line. In a hotel, ask

for a data line.

• Try another telephone line, preferably one normally used for a fax machine or modem.

• The modem at the other end may have a problem. Try dialing to a different modem.

If the modem will not connect at 56K speed

• The host modem may not support a 56K (V.90) connection speed.

• Connection speed depends on several factors, such as the condition of the telephone line. Try

connecting another time.

If the modem will not connect at any speed

• Make sure you’re using an analog telephone line. You must not use a digital line. In a hotel, ask

for a data line.

• Make sure the telephone line goes directly from the notebook’s modem phone jack to the

telephone jack on the wall.

• If you have a single telephone line for voice and modem use, make sure no one else is using the

line and that the phone is not off the hook.

• Try another telephone line, preferably one normally used for a fax machine or modem.

• Contact your Internet Service Provider (ISP). It's possible that service may be unavailable

temporarily or that your settings are incorrect.

• Restart your notebook and attempt another connection.

• Download the latest modem driver from the technical support area of the HP notebook web site

(www.hp.com/notebooks).

• Run the modem diagnostics:

1. Click Start, Control Panel, Printers and Other Hardware, Phone and Modem Options.

2. Click the Modems tab, and select the modem you want to test.

3. Click Properties, Diagnostics, Query Modem.

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If the modem isn’t detected

• Check the modem setup. In Control Panel, open Phone and Modem Options.

• Click Start, Control Panel, Performance and Maintenance, System. On the Hardware tab, open the

Device Manager. If the modem is disabled, try to enable it. If it has a conflict, try disabling
another device.

• If you’re running fax software using fax Class 2, try using Class 1.

If the modem dials but you can’t hear it

• If available, make sure the mute indicator is turned off. If it’s on, press the mute button.

• Check the speaker volume setting and mute setting.

• In Control Panel, open Phone and Modem Options. Select the modem and click Properties, then

check the volume setting on the Modem tab.

If the modem connect s, but t r ansferred data is bad

• In Control Panel, open Phone and Modem Options. Make sure the hardware settings match on

sending and receiving modems.

If the modem causes an ERROR message

• A string of AT commands may contain an incorrect command. If you entered commands as extra

settings for the modem in Control Panel or in your communications software, check the
commands.

If the modem doesn’t fax

• If you’re using fax Class 2 in the fax software, try using Class 1.

• Close any other communications programs.

• If you’re faxing by printing from an application, make sure you’ve selected the fax printer.

• Try turning off power management features temporarily.

If the modem clicks repeatedly but doesn’t connect

• Make sure you’re using an analog telephone line. You must not use a digital line. In a hotel, ask

for a data line.

• Check all cables and connections.

One-Touch Button Problems

If One-Touch buttons are not working properly

• Make sure the items associated with the buttons are the ones you want.

If the onscreen display does not appear when pressing a One-Touch button

• Make sure the Onscreen Display is enabled.

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Parallel and USB Problems

If a USB mouse doesn’t work properly

• Make sure you followed the manufacturer’s installation instructions completely and have installed

the mouse properly. If not, repeat the procedure.

• Make sure the port connection is secure.

• Put the notebook on standby, then resume.

• Restart the notebook.

• Check mouse settings in Control Panel.

• Check the port settings in Control Panel: click Start, Control Panel, Performance and

Maintenance, System. On the Hardware tab, open the Device Manager, and double-click
Universal Serial Bus Controllers.

If a USB modem d oesn’t work properly

• See “Modem Problems” on page 22.

• Make sure the port connection is secure.

• Use the modem troubleshooter (under Networking problems) in Windows Help and Support.

• Check the modem settings in Control Panel.

• Disable the internal modem:

1. Click Start, Control Panel, Performance and Maintenance, System. On the Hardware tab,
open the Device Manager.

2. Double-click Modem to list the current modem devices.

3. Double-click the internal modem, then select the option to disable the modem.

• Check the port settings in Control Panel: click Start, Control Panel, Performance and

Maintenance, System. On the hardware tab, open the Device Manager, then double-click
Universal Serial Bus controllers.

If the parallel port is not working

• Make sure the port connection is secure.

• Check the port settings in Control Panel: click Start, Control Panel, Performance and

Maintenance, System. On the Hardware tab, open the Device Manager, and double-click Ports
(COM & LPT).

• Test the ports with the e-DiagTools diagnostics— see “Using the e-Diagtools Diagnostic Tests”

on page 32.

If the USB port is not working

• Contact the vendor of the peripheral device and check the HP Notebook web site

(www.hp.com/notebooks) for the latest versions of the USB drivers and the driver for the device.

• Check the port settings in Control Panel: click Start, Control Panel, Performance and

Maintenance, System. On the Hardware tab, open the Device Manager, and double-click
Universal Serial Bus controllers.

• Test the USB port with the e-DiagTools diagnostics— see “Using the e-Diagtools Diagnostic

Tests” on page 32.

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PC Card (PCMCIA) Problems

If the notebook doesn’t recognize a PC card

• Remove and reinsert the PC card.

• Put the notebook on standby, then resume.

• Restart the notebook.

• If the card requires an IRQ, make sure one is available. If necessary, set the IRQ to an unused

value: click Start, Control Panel, Performance and Maintenance, System. On the Hardware tab,
open the Device Manager, then view resources by type.

• Check the HP Business Support web site (www.hp.com/go/bizsupport) for information about

installing certain PC cards.

• Make sure your notebook supports the problem PC card: check the HP Notebook web site

(www.hp.com/notebooks) for a list of approved and tested PC cards.

• Try the card in another computer to see whether the card functions properly.

• Test the PC card with the e-DiagTools diagnostics— see “Using the e-Diagtools Diagnostic

Tests” on page 32.

If an I/O card stops communicating properly

• The card may have been reset if your notebook went on standby or into hibernation, or turned off.

Exit any applications, then remove and reinsert the card.

• Check settings in Control Panel.

If a PC card modem is not working

• Disable the internal modem:

1. Click Start, Control Panel, Performance and Maintenance, System. On the Hardware tab,
open the Device Manager.

2. Double-click Modem to list the current modem devices.

3. Double-click the internal modem, then select the option to disable the modem.

Performance Problems

For best performance with Windows XP, the notebook should have at least 128 MB of SDRAM.

If the notebook paus es or runs sluggishly

• This may be normal Windows behavior. Certain background operations (such as a virus-scanning

program) can affect can affect response time.

• Some file browsers respond slowly while processing graphics or waiting for broken network

connections to time out.

• Press Ctrl+Alt+Del to see if an application is not responding.

• Restart the notebook.

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• If the notebook’s hard disk drive frequently runs (as indicated by the hard drive light on the front

of the notebook) while the notebook appears to be paused or running slowly, Windows is likely
spending excess time writing to its swap file on the notebook’s hard disk. Consider installing
additional memory.

• Check the amount of available free disk space. Delete temporary and unneeded files.

If the notebook stops respondi ng

• Press Ctrl+Alt+Del to end the application that is not responding.

• Reset the notebook—see “Resetting the Notebook” on page 11.

Power and Battery Problems

If the notebook turns off immediatel y after it turns on

• Battery power is probably extremely low. Plug in the AC adapter or insert a charged battery.

If the notebook keeps beepi ng

• The notebook beeps repeatedly when battery power is low (you can set this option in Power

Options in Control Panel). Save your work, turn off the notebook immediately, and insert a
charged battery or plug in the AC adapter.

If the battery doesn’t charge

• Make sure that the AC adapter is fully plugged into the power source and the notebook, and that

the light on the adapter is on.

• If you’re using a power strip, unplug the AC adapter from the power strip and plug it directly into

a wall outlet.

• Make sure the battery is fully installed and locked in place.

• Move the notebook away from any nearby heat source. Unplug the AC adapter and allow the

battery to cool down. If the battery gets too hot, it will not charge properly.

• If available, try another battery and AC adapter.

If the notebook has a sh or t operating time

• Turn down the display brightness.

• Check the timeout settings in Power Options in Control Panel.

• If you are running an application that has an automatic save feature (such as MS Word), disable

this feature or increase the specified save time to reduce hard disk access.

• PC card use and heavy modem use can affect battery operating time.

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• Certain applications can cause excess CPU and power usage. (Users can get Intel Power Monitor

from www.intel.com and monitor CPU load.)

• When playing DVD movies on battery power, use Power Options in Control Panel to select the

Portable/Laptop power scheme.

• You may need to periodically train the battery and calibrate the battery gauge. To do this, restart

the notebook, press F6 when the HP logo appears, and follow the instructions that appear
onscreen. This process requires four to five hours to complete, and you cannot use the notebook
during this time.

• Battery life depends on notebook model and usage, as well as battery type, training, and

calibration. The following are approximate lifespans by battery type:

• 8-cell Li-Ion: up to 3.5 hours.

• 6-cell Li-Ion: up to 2.5 hours.

• 8-cell NiMH: up to 2 hours.

• Rechargeable batteries tend to degrade over time. If the operating time has gradually become

shorter and the battery is more than a year or two old, you may need to replace the battery.

If the Time Remaining for the battery is not correct

• The Time Remaining is an estimate based on the rate at which the notebook is using power at that

instant. So, if you check the Time Remaining while the notebook is using a good deal of power
(such as when reading from a CD or DVD), the value will likely show less time remaining than
you really have, since you will probably later switch to tasks that require less power.

If the notebook doesn’t go on sta nd by as expected

• If you have a connection to another computer, the notebook won’t go on standby if the connection

is active.

• If the notebook is performing an operation, it normally waits for the operation to finish before

going on standby.

If the notebook doesn’t automati cal l y hibernate as expected

• Make sure hibernation support is enabled: click Start, Control Panel, Performance and

Maintenance, Power Options, then click the Hibernate tab.
Also, check the Power Schemes tab. Make sure the Hibernate timeouts for both AC power and

battery power are not set to Never.

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Printing Problems

Hint

You can solve most printing problems by using the printing troubleshooter in Windows Help and
Support.

If a printer doesn’t print

• Make sure the printer is on and has paper in it.

• Make sure you are using the correct printer cable or cable adapter, and that the cable is secure at

both ends.

• Check for printer errors.

If the left edge of printed output is missi ng

• Certain applications may not work properly with 600-dpi printers. If you’re using such a printer,

try selecting a compatible printer driver for a 300-dpi printer. For example, if you were using a
600-dpi HP LaserJet printer, you might try using the HP LaserJet IIIsi driver (300 dpi).

If an infrared printer doesn’t print

• Make sure the printer is on and has paper in it.

• Check for printer errors.

• Make sure Windows is running; otherwise infrared printing is not available.

• See “Infrared Problems” on page 20.

Startup Problems

If the notebook doesn’t respond when y ou t ur n i t on

• Connect the AC adapter.

• Reset the notebook by using a pen or straightened paper clip to press the reset switch on the back

of the notebook. Then press the power button to turn the notebook on.

• Don’t use the touch pad while booting or resuming.

• If the notebook still doesn’t respond, remove the battery and AC adapter, and remove any PC

Card. Then reset the notebook using the reset switch on the back of the notebook, replace the
battery and plug in the AC adapter, and turn on the notebook by pressing the power button.

If the notebook won’t boot from battery power

• Make sure the battery is properly inserted and fully charged. Check the battery’s charge by

clicking the power icon in the taskbar, or using Power Options in Control Panel.

• If available, try another battery.

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If the notebook won’t boot f r om t he f l oppy disk drive

• Make sure the drive is installed correctly.

• Make sure the floppy disk drive is selected as the boot device—see “Changing the Boot Device”

on page 11.

If the notebook takes a long time to resume

• The notebook can routinely take a minute or more to resume if it has a network card installed.

While the operating system is loading drivers and checking hardware and network connections,
you will see a blinking cursor on your display. As soon as the hardware has been re-initialized, the
Windows desktop will appear.

Standby and Resume Problems

If the notebook takes a long time to resume after being on standby

• The notebook can take a minute or longer to resume if a network card is installed. A blinking

cursor appears on the display while the system is loading and checking hardware and network
connections. As soon as the hardware is reinitialized, the Windows desktop appears.

If you have general pr oblems resuming fr om standby or hi ber nat i on

• Close all applications before going on standby or into hibernation.

• If the problems appeared after you installed new software (including drivers, such as printer

drivers), uninstall the software. Contact the software application or device vendor for additional
support.

If a notebook with Bluetooth won’t enter standby or hibernation

• Disable Bluetooth. If the Bluetooth device is transmitting, the notebook may not be able to enter

standby or hibernation.

Wireless Problems

If you have problem s with wireless comm unication

• Make sure the wireless indicator light is on.

• See “LAN Problems” on page 21.

If you have trouble connecting to an ot her computer in My Network Places

• Wait a few minutes, then press F5 to refresh the list of computers on the network.

• Click Start, Search to locate the computer.

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If you cannot connect to a particular computer on the network

• Make sure the computer is properly connected to the network.

• Make sure your TCP/IP setup is correct for your network: click Start, Control Panel, Network and

Internet Connections, Network Connections. Contact your system administrator for the correct
settings.

If the wireless link icon in the taskbar is red

• Make sure you are using the correct SSID and channel settings: click the wireless link icon in the

taskbar and select Advanced Configuration. Contact your system administrator for the correct
settings.

• Make sure you are in range of an access point (for an infrastructure connection) or other wireless

computer (for an AdHoc connection).

If you can connect, but t he network is slow

• Check whether you might be in an area served by more than one wireless LAN. If so, the LANs

could be interfering with each other.

• Move closer to the access point (for an infrastructure connection) or other wireless computer (for

an AdHoc connection). You could be too far away for high-speed communication.

• Stop using any USB device that may be transferring large amounts of data, or adjust application

settings to reduce the transfer rate.

If a notebook with Bluetooth won’t enter standby or hibernation

• Disable Bluetooth. If the Bluetooth device is transmitting, the notebook may not be able to enter

standby or hibernation.

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Using the e-Diagtools Diagnostic Tests

The e-Diagtools hardware diagnostic program included with your notebook provides two levels of
testing: automated testing using its basic hardware test, and advanced testing using individual
hardware tests.

The tests are designed to run after the system reboots. This ensures that the notebook will be in a
predictable state, so the diagnostic program can properly test the hardware components. The tests are
non-destructive and are intended to preserve the state of the notebook. The notebook reboots when
you exit the program so drivers can be loaded.

1. Restart the notebook: click Start, Turn Off Computer, Restart.

2. When the HP logo appears, press F10 to start the diagnostic test.

3. When the menu appears, press Enter to run e-Diagtools.
The first time you run the program, you are prompted to select the language for the program.

4. Follow the prompts to run e-Diagtools.

5. When the Configuration Description appears, verify the list of detected hardware.

6. Run the basic test. Press F2 to start the basic hardware test. The results appear when the test is
complete.

7. If you intend to exit without running the advanced tests, press F4 and then F7 to view the Support
Ticket. Press Esc and then F3 to exit.

8. Optional: Run the advanced tests. Press F2 to open the advanced test screen.

9. Select and run the appropriate tests. Tests are listed only for detected hardware. Press the
following keys to run tests:

Enter Runs the highlighted test.
F5 or Space Marks or unmarks the highlighted test.
F6 Marks or unmarks all tests in the current menu.
F7 Marks or unmarks all tests in all menus.
F10 Runs all marked tests.

10. Save the Support Ticket. Press T to update and display a Support Ticket containing system and

test information. Press Esc to exit.

11. When you are finished running tests, press Esc to exit the advanced tests.

12. Optional: To save the Support Ticket to a floppy disk, press F7, then Alt+C.

13. Exit. Press F3 and then any key to exit and reboot.

14. Optional: open the Support Ticket. In Windows, click Start, All Programs, HP e-DiagTools,

e-DiagTools for Windows.

15. Click View to display the Support Ticket.

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16. To add information about your problem, click Comments and type the information, then click OK.
To save or print the Support Ticket, click Save As or Print.
To e-mail the Support Ticket to your support agent, click e-Mail. The first time you make an e-

mail connection from this program, click Change Settings in the Connect window and enter the
settings recommended by your support agent.

e-DiagTools for Windows can also update the version of e-Diagtools on your notebook’s hard disk. In
e-DiagTools for Windows, use the e-Diagtools menu.

If you have trouble running e-Diagtools from the hard disk, you can also run it from the Recovery
CDs. Boot from disk 1 and select the diagnostics option.

Using the BIOS Configuration Utility

The BIOS (Basic Input and Output System) configuration utility enables you to change the notebook’s
system configuration, and to tailor the operation of your notebook to your individual work needs.

1. Restart the notebook: click Start, Turn Off Computer, Restart.

2. When the HP logo appears, press F2 to enter the BIOS configuration utility.

3. The pointing devices are not active in the BIOS configuration utility, so you will need to use the
keyboard to navigate:

• Press the left and right arrow keys to move among menus.

• Press the up and down arrow keys to move among parameters in a menu.

• Press Enter to open the dialog for the current parameter, or to select the parameter.

• Press Tab or the left and right arrow keys to move among selections in a dialog.

• Press the up and down arrow keys to move through values for the setting.

• Press Enter to close the dialog and accept the settings.

4. After you select the options you want, use the Exit menu to exit the BIOS configuration utility.

The following tables describe the settings for the notebook’s initial BIOS release. If your notebook’s
BIOS version is different, some settings may differ from those shown, or may be absent.

Startup Menu
Setting Description Default

Date and Time Sets the date using mm/dd/yyyy format and the time using 24-

hour format. Value set takes effect immediately.

Boot Device Shows the order of boot devices, with “+” indicating a device

category. Move the entries to change the order. If the notebook
has more than one device in a category, you can select the
one scanned. Internal LAN appears in the list only if a built-in
LAN is present—it provides diskless boot from a network
server.

CPU Serial Number For a processor with a serial number, makes the processor

serial number available to software.

1. Hard Disk

2. CD-ROM/
DVD

3. Diskette A

4. Internal LAN

Enabled

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Components Menu

Setting Description Default

Keyboard Numlock Sets whether keyboard Num Lock is enabled at startup. Enabled
LCD Display on/off

(selected models)
LCD Display Date/Time

(selected models)

Security Menu

Setting Description Default

Set Admin Password Press Enter to set, change, or clear the administrator

Set User Password Press Enter to set, change, or clear the user password. The

Exit Menu

Setting Description

Save and Reboot Saves changes, then exits and reboots.
Exit (No Save) Discards any changes made since last save, then exits and

Default Settings Restores default settings, and remains in the BIOS

Restore Settings Discards any Setup changes made since last save, and

Enables the LCD status panel. Enabled

Sets the format for displaying the date and time on the LCD
status panel.

password, which protects BIOS settings. The password can
have no more than 8 characters (0-9, A-Z), and cannot include
special or accented characters. Also sets whether the
password is required when the notebook boots, or to enter the
BIOS configuration utility.

password can have no more than 8 characters (0-9, A-Z), and
cannot include special or accented characters. (The
administrator password must be set first.) Also sets whether
the password is required when the notebook boots, or to enter
the BIOS configuration utility.

reboots. Does not affect password, date, or time changes.

configuration utility. Does not affect password, date, or time
changes.

remains in Setup. Does not affect password, date, or time
changes.

mm/dd/yy
hh:mm AM/PM

Enter

Enter

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Reinstalling and Updating Software

You can use the Recovery CDs to recover the original factory software for your notebook.
The Recovery CDs also provide Windows drivers specific to your notebook to configure a custom

system. You can find drivers in these locations:

• On your notebook’s hard drive under C:\hp\drivers.

• On the Recovery CDs under \hp\drivers.

• On the HP Business Support web site (www.hp.com/go/bizsupport). This web site contains the

latest updates of software drivers for different operating systems.

Recovering the Factory Software Installation

You can use the Recovery CDs to reinstall the original factory software on your notebook’s hard disk.
You can also use the same process to create a larger Utility partition on your hard disk, or to create a
Utility partition on a new hard disk. The hidden Utility partition contains the e-Diagtools diagnostic
tests and stores hibernation data for operating systems that don’t provide hibernation.

CAUTION

This procedure formats the notebook’s hard disk drive and erases all data on the disk. After the
hard disk is formatted, you’ll need to reinstall your applications.

Do not interrupt the following process or unplug the AC adapter until the process is complete.

1. Important: if possible, back up all data from the notebook’s hard disk. The following steps delete
all data from the disk.

2. Connect the AC adapter to the notebook.

3. Insert the Recovery CD (disk 1) into the notebook’s CD/DVD drive. If the notebook is turned off,
use a pin or straightened paper clip to press the release switch on the drive door to open it.

4. Turn on or restart the notebook. If the notebook is running, click Start, Turn Off Computer,
Restart.

5. When the HP logo appears, press Esc to display the Boot menu.

6. Use the arrow keys to select the CD-ROM/DVD drive as the boot device, and press Enter.

7. When the Rec overy C D dialog box appears, follow the displayed instructions. If prompted, accept
the recommended partition size. If you install the factory software, the recovery process can take
up to 15 minutes.

If you want to create the Utility partition without installing the factory software, click Advanced
and select not to install the operating system.

If your hard disk is partitioned into several drives, you can install the factory software on drive C
without affecting other drives. Click Advanced and select to restore only the C partition.

8. Important: when prompted to reboot the notebook, press Ctrl+Alt+Del and follow any
instructions that appear.

zt1100/xz100 and xt1000 Series Reinstalling and Updating Software 35
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Updating the Notebook BIOS

Hewlett-Packard may provide updates to the notebook’s BIOS to enhance the capabilities of your
system. Check the HP Business Support web site (www.hp.com/go/bizsupport). Installation utilities
and instructions will be provided with the updates.

Updating the Windows Drivers

From time to time, HP releases updated versions of the drivers for your notebook. These updates are
intended to fix any problems that could be encountered in the drivers, and to keep your notebook
running smoothly. In addition, HP normally provides drivers for other versions of Microsoft
Windows, in case you decide to install a different version of Windows.

• Download the latest drivers for your notebook from the HP Business Support web site

(www.hp.com/go/bizsupport). Follow the instructions included with the drivers.

36 Reinstalling and Updating Software zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Removing and Replacing Parts

This chapter shows how to remove and replace the notebook’s user-replaceable components.

Caution

Always provide proper grounding when performing repairs. Without proper
grounding, an electrostatic discharge can damage the notebook and its
components.

Notes

To reassemble a component, perform the removal procedure in reverse order. Any special notes
required for reassembly are included at the end of each section.

Symbols like this are used throughout this chapter to show approximate full-size screw
outlines. Use these to verify the sizes of screws before you install them. Installing a wrong-size
screw can damage the notebook. (The symbol shown represents an M2.5×5mm T-head screw.)

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 37
Troubleshooting and Self-Repair Guide

Removing the Battery

Table 1. Battery Replacement Part Numbers

Description Part Number Exchange Part Number

Battery, LiIon 8-cell F3172-60901

Required Equipment

• None.

Removal Proced ur e

• Slide the battery’s release latch in the direction of the arrow on the latch, then lift the battery out

of its compartment.

Figure 8. Removi ng t he Battery

Reassembly Notes

• Insert the front end of the battery into the battery compartment, then press the back end in until

the battery clicks into place.

38 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
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Removing the Optical Drive Module

Table 2. Optical Drive Module Replacement Part Nu mbers

Description Part Number Exchange Part Number

Drive, DVD module F3377-60962
Drive, DVD/CD-RW Combo module F3377-60963

Required Equipment

• None.

Removal Proced ur e

• Slide the module release latch in the direction shown by the arrow on the latch, and remove the

module.

Figure 9. Releasing the Plug-in Mod ul e

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 39
Troubleshooting and Self-Repair Guide

Removing the Hard Disk Drive

Table 3. Hard Disk Drive Replacement Part Numbers

Description Part Number Exchange Part Number

Drive, hard disk (20 GB, 9.5mm, Hitachi ATA100) 0950-4193 F3257-69105
Drive, hard disk (20,GB, 9.5mm, IBM [diablo]

ATA100)

Drive, hard disk (30 GB, 9.5mm, IBM [diablo]

ATA100)
Drive, hard disk (30 GB, 9.5mm, Hitachi ATA100) 0950-4168 F3257-69106
Drive, hard disk (40 GB, 9.5mm, Hitachi ATA100)

(zt1100/xz100 series only)
Drive, hard disk (40 GB, 9.5mm, Toshiba ATA100)

(zt1100/xz100 series only)
Tray, hard disk drive F3377-60966

Required Equipment

• #0 Phillips screwdriver.

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

0950-4163 F1660-69114

0950-4162 F2072-69115

0950-4313 F3378-69101

0950-4288 F3378-69102

2. On the bottom of the unit, remove both hard drive retaining screws.

Screws,
M2.5×4mm

Figure 10. Removing the Hard Disk Driv e

3. Carefully pull the hard drive out of the notebook.

4. Remove all four screws from the hard drive tray and drive case, then lift the drive out of the tray.

40 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Screws,
M2.5x4mm (2)

Screws,
M2.5x4mm (2)

Figure 11. Removing the Hard Disk Tray

Reassembly Notes

• Insert the connector end of the drive through the opening in the tray, then lower the drive into

place.

• Carefully slide the hard drive assembly into its compartment. Press firmly to make sure the

connector seats properly.

Important

If you are installing a new hard disk drive, install the factory software and operating system on the
drive before loading any additional software—see “Recover ing the Fact or y Soft war e Insta llati on”
on page 37.

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 41
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Removing the Mini-PCI Card

Certain notebook models include a mini-PCI card that contains either a modem or combined modem
and 802.11 wireless.

Table 4. Mini-PCI Card R epl acement Part Numbers

Description Part Number Exchange Part Number

PCA, mini-PCI (modem) F3377-60950
PCA, mini-PCI (modem/802.11) F3377-60951

Caution

Provide proper grounding and handle the card only by its edges, or you could damage it through
electrostatic discharge.

Required Equipment

• #0 Phillips screwdriver.

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

2. On the bottom of the notebook, loosen the screw holding the mini-PCI cover (the cover retains the
screw), and remove the cover.

3. Press outward to release the latches at the sides of the card, and carefully lift its free edge up.

4. Disconnect the cable(s) from the card.

5. Gently pull the card out of its connector.

42 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Figure 12. Remov i ng t he Mini-PCI Card

Reassembly Notes

• Reattach the cable(s) to the card, and tuck them into the compartment.

• Gently press the card into the connector at an angle of about 30°, until it is fully inserted. Then

press down on both sides of the card until the latches snap closed.

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 43
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Removing the Keyboard Cover

Table 5. Keyboard Cover Replacement P art Numbers

Description Part Number Exchange Part Number

Cover, keyboard, 15-in (with LED lens)

(zt1100/xz100 series only)

Cover, keyboard, 15-in (with LED lens)

(xt1000 series only)

Cover, keyboard (with LED lens)

(zt1100/xz100 series only)

Cover, keyboard (without LED lens) F3377-60925

F3379-60911

F3433-60911

F3377-60924

Required Equipment

• #0 Phillips screwdriver.

• Small flat-blade screwdriver.

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

2. Close the notebook’s display, and remove both screws from the backs of the hinge covers.

Screws,
M2.5x4mm (2)

Figure 13. Remov i ng t he Keyboard Cover Retaining S c r ews

3. Open the display so that it lays flat.

4. Use the flat-blade screwdriver to carefully pry up the right end of the keyboard cover just above
the Page Up key, then lift the end until the cover unsnaps.

Caution

When removing the keyboard cover, be careful not to pull on the cable that connects the
keyboard cover to the notebook.

5. Carefully lift the cover to unsnap the latches above the center One-Touch button and the F1 key,
then lift the cover about an inch off of the notebook.

44 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

6. Disconnect the keyboard cover switch cable from the motherboard, and remove the cover from
the notebook.

Figure 14. Removing the Keyboar d Cover

Reassembly Notes

• Make sure the keyboard cover switch cable is securely connected to the motherboard.

• Bend the center of the keyboard cover upward slightly, and insert the tabs on the ends of the cover

into the slots in the notebook’s case. Fit the hinge covers over the hinges, and gently press the
cover into place.

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 45
Troubleshooting and Self-Repair Guide

Removing the Keyboard

Table 6. Keyboard Replacement Part Numbers

Description Part Number Exchange Part Number

Keyboard, US English (zt1100/xz100 series only) F3428-60901
Keyboard, French (zt1100/xz100 series only) F3428-60903
Keyboard, UK English (zt1100/xz100 series only) F3428-60902
Keyboard, Italian (xt1000 series only) F3428-60904
Keyboard, German (xt1000 series only) F3428-60911
Keyboard, Spanish (xt1000 series only) F3428-60905
Keyboard, Swiss (xt1000 series only) F3428-60908

Required Equipment

• #0 Phillips screwdriver.

• Small flat-head screwdriver.

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

2. Remove the keyboard cover (page 44).

3. Loosen the three retaining screws along the top of the keyboard (the keyboard retains the screws).

Figure 15. Looseni ng the Keyboard Ret a ining Screws

Caution

When opening the keyboard, be careful not to pull on the ribbon cable that connects the keyboard
to the notebook.

4. Raise the top of the keyboard, then lift the keyboard up and out of the notebook.

46 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
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5. Lay the keyboard face down on the top case, forward of its normal position, and disconnect the
ribbon cable from the motherboard.

Warning

Do not touch the metal surfaces inside the notebook until they have cooled off. They could
be very hot if the notebook was running recently.

Figure 16. Disconnecting the Keyboard

Reassembly Notes

• Lay the keyboard face down on the top case, forward of its normal position, and reconnect the

ribbon cable.

• Slip the metal tabs on the bottom of the keyboard into their slots in the top case, then lower the

keyboard into place.

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 47
Troubleshooting and Self-Repair Guide

Removing an SDRAM Module

The notebook has no SDRAM built into its motherboard, but has two slots for PC133 SDRAM
modules: a system SDRAM slot beneath the keyboard (containing an SDRAM module installed at the
factory), and an expansion slot on the bottom of the unit.

Table 7. SDRAM Modul e Replacement Part Numbers

Description Part Number Exchange Part Number

Module, SDRAM, 128 MB, PC133 SODIMM 1818-8504
Module, SDRAM, 256 MB, PC133 SODIMM 1818-8635
Module, SDRAM, 512 MB, PC133 SODIMM 1818-8604 F2298-69001

Caution

Provide proper grounding and handle the SDRAM module only by its edges, or you could
damage the module through electrostatic discharge.

Required Equipment

• #0 Phillips screwdriver.

Removing an Expansion SDRAM Module

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

2. On the bottom of the notebook, loosen the screw holding the SDRAM cover (the cover retains the
screws), and remove the cover.

3. Press outward to release the latches at the sides of the SDRAM module (so that the free edge of
the module pops up), then pull the module out of the connector.

Figure 17. Remov i ng an Expansion SDRAM Module

48 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
Troubleshooting and Self-Repair Guide

Reassembly Notes

• Carefully press the SDRAM module into the connector at an angle of about 30°, until it is fully

inserted. Then press down on both sides of the module until the latches snap closed.

Figure 18. Installi ng an Expansion SDRAM Module

Removing the System SDRAM Module

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

2. Remove the keyboard cover (page 44).

3. Open the keyboard (page 48, steps 1 though 5). You don’t need to disconnect the keyboard cable.

4. Press outward to release the latches at the sides of the SDRAM module (so that the free edge of
the module pops up), then pull the module out of the connector.

Figure 19. Removing the System SDRAM Module

Reassembly Notes

• Carefully press the SDRAM module into the connector at an angle of about 30°, until it is fully

inserted. Then press down on both sides of the module until the latches snap closed.

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 49
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Removing the Speakers

Table 8. Speaker Replacement Part Numbers

Description Part Number Exchange Part Number

Kit, speakers (L/R) F3377-60942

Required Equipment

• #0 Phillips screwdriver.

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

2. Remove these additional assemblies:

• Keyboard cover (page 44).

• Keyboard (page 48).

3. Remove the retaining screw from each speaker. Disconnect the speaker wires from the
motherboard, and lift the speakers out of the notebook.

Figure 20. Removing the Speakers

Reassembly Notes

• Make sure the tabs on the left side (for the left speaker) or the right rear (for the right speaker) of

the speaker fit between the corresponding tabs in the bottom case.

• Make sure the speaker wires fit through their notches in the bottom case, close to the speaker.

50 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
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Removing the Fan

Table 9. Fan Replacement Part Numbers

Description Part Number Exchange Part Number

Fan, heatsink F3377-60946

Required Equipment

• #0 Phillips screwdriver.

Removal Proced ur e

1. Unplug the AC adapter, if present, and remove the battery.

2. Remove these additional assemblies:

• Keyboard cover (page 44).

• Keyboard (page 48).

• Right speaker (page 52).

3. Disconnect the fan wires from the motherboard.

4. Remove both retaining screws from the fan.

5. Lift the fan out of the notebook.

Caution

Do not spin the fan blades with your finger, or you could damage the fan’s bearings.

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 51
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Figure 21. Removing the Fan

Reassembly Notes

• Make sure the fan wires are not pinned under the fan, and is securely plugged into its socket.

• If present, make sure the wireless cables are not trapped under or behind the fan.

52 Removing and Replacing Parts zt1100/xz100 and xt1000 Series
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Replacing Small Parts and Accessories

The following small parts are user-replaceable.

Table 10. Replacing Small Parts

Part Part Numbers Replacement Procedure
Cover, mini-PCI

Cover, expansion
SDRAM

Covers, screw (on
display bezel)

Feet, rubber

Table 11. Pavilion zt110 0/ xz100 and Omnibook xt 1000 Series Accessories

Accessory Description
New Accessories

F3172A Standard LiIon Battery
F3491A CD-RW Upgrade Module
F3492A DVD Upgrade Module
F3493A CD-RW/DVD Combo Drive
F3494A Simple Port Replicator

Tested Cross-Platform Accessories

D9510B USB Floppy Disk Drive Module
F1455A Auto Air Adapter (75 W)
F1606A Omnibook Ballistic Nylon Case
F1607A Omnibook Leather Case
F1608A Omnibook Executive Case
F1626B 3COM 10/100 Enet PC Card
F1645A Kensington Lock
F1747A Defcon Alarm
F1771A Universal Carrying Case
F1778A Promotional Carrying Case (NAM & AP)
F1778B Standard Carrying Case (Europe Only)
F1781A Ultra Slim Line Adapter (60 W)
F1782A 3COM Type II Combo Card
F2020A Executive Leather Case (Europe only)
F2135B Wireless Comm Access Point
F2135C Wireless Comm Access Point
F2136B Wireless PC Card (128 bits)
F2196A 3Com Bluetooth PC Card
F2297A Car Adapter, 24 V (EU only)
F2298A 512 MB PC133 SDRAM
F3495A 128 MB PC133 SDRAM
F3496A 256 MB PC133 SDRAM
P1980A USB Wireless LAN 802.11b
P1981A USB Wireless LAN Access Point

Included in door kit
F3377-60933

Included in door kit
F3377-60933

Included in
feet/cover kit
F3377-60967

Included in
feet/cover kit
F3377-60967

On the bottom of the notebook, loosen the screw in the mini-PCI
cover (the cover retains the screw) and remove the cover.

On the bottom of the notebook, loosen the screw in the SDRAM
module cover (the cover retains the screw) and remove the cover.

Insert a small flat-blade screwdriver under the cover and pry it loose.
To replace, firmly press the adhesive side of the cover into the
recess.

Insert a small flat-blade screwdriver under the foot and pry it loose.
To replace, firmly press the adhesive side of the foot into the recess.

zt1100/xz100 and xt1000 Series Removing and Replacing Parts 53
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Reference Information

This section includes information on HP’s password removal policy, and on notebook display quality.

Password Removal Policy

If the user forgets the system password, the user calls HP Customer Care to determine the proper
password removal procedure. The user must provide proof of ownership, and the notebook must be
operated during the procedure.

The password removal procedure is protected as HP Company Private information. There are a
restricted number of locations that can perform password removal. The procedure may not be
disclosed or distributed outside those locations.

Password removal is strictly controlled. Hewlett-Packard and authorized support providers must
ensure with written evidence that the notebook being “cleansed” is actually in the possession of the
notebook’s actual and current owner. This requires a sales receipt showing the notebook serial number
and owner’s name, or a written statement from the owner attesting that he or she is the owner of the
notebook. The statement can be a fax copy of the document. The fact that the notebook is in the hands
of an HP representative on behalf of the customer is not evidence of ownership. In addition, HP will
not remove the password of a notebook for any non-owner, even if it is requested by law enforcement
agencies. If you receive such a request, you should notify management and HP Corporate Legal
immediately. (These requests may require a court order prior to our participation.)

Further, the entity removing the password must log the name, serial number, and date of the removal,
and file the written backup with the log. The log and backup are subject to standard record retention
process and review.

The final issue relating to removal of passwords is that HP cannot provide information to users that
would assist them in improperly removing a password and opening a notebook.

Hewlett-Packard Display Quality Statement

TFT display manufacturing is a highly precise but imperfect technology, and manufacturers cannot
produce large displays that are cosmetically perfect. Most, if not all, TFT displays exhibit some level
of cosmetic imperfection. These cosmetic imperfections may be visible to the customer under varying
display conditions, and can appear as bright, dim, or dark spots. This issue is common across all

vendors supplying TFT displays in their products and is not specific to the HP notebook display.

HP notebook TFT displays meet or exceed all HP standards for cosmetic quality of TFT displays. HP
does not warrant that the displays will be free of cosmetic imperfections. TFT displays can have a

small number of cosmetic imperfections and still conform to HP’s cosmetic quality specifications.

zt1100/xz100 and xt1000 Series Reference Information 55
Troubleshooting and Self-Repair Guide

Here are some guidelines for determining what action to take on customers’ complaints of cosmetic
imperfections in their TFT displays:

1. View the notebook under the customer’s normal operating conditions.
This means that if the customer uses the notebook predominately in DOS, in Windows, or in some

other application or combination of applications, you should make the determination under those
same applications. Self test is not a normal operating condition and is not a sufficient tool for
interpreting display quality.

2. Use the table below to determine whether the display should be considered for replacement. These
are the only conditions in this guideline that may call for a replacement due to a defect in material
or workmanship based on the HP Limited Warranty Statement.

3. If a display is considered for replacement, make sure the customer understands that cosmetic
variations may also exist on the replacement display, and may require the customer to use a work­around to obscure the cosmetic imperfection.

4. Displays with cosmetic imperfections that do not conform to the above conditions and tests will
not normally be considered for display replacement. The HP-responsible person working with the
customer should identify work-arounds that are reasonable and appropriate for that customer.
Customers who require a more perfect display solution should consider switching to a notebook
with a DSTN display.

We expect that over time the industry will continue to produce displays with fewer inherent cosmetic
imperfections, and we will adjust our HP guidelines as these improvements are implemented.

Type of Imperfection Imperfections Not Allowed
Electrical Imperfections:

(a)

(a)

Bright dots
Dark dots

• 7 or more single bright dots.

• 7 or more single dark dots.

• 9 or more total (bright and dark combined) defective dots.

• Any occurrence of multiple defective dots within 15 mm.

Mechanical Imperfections:
Discoloration
Polarizer bubbles, dents
Definitions of imperfections:

a

A bright or dark dot is a subpixel (red, green, or blue dot) that is stuck on or off.

b

A polarizer dent or bubble is a light spot with a darker border that appears on a lighted display and does

not change size. In contrast, a polarizer scratch is a light line that is visible on a darker background and
does not change size.

(b)

• Any polarizer bubble, discoloration, or dent that is visible from at least

36 cm (14 in).

56 Reference Information zt1100/xz100 and xt1000 Series
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