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2
Troubleshooting
Å WARNING: Only authorized technicians trained by HP should repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly-/module-level repair. Because of the complexity of the individual boards and subassemblies, do not attempt to make repairs at the component level or modifications to any printed wiring board. Improper repairs can create a safety hazard. Any indication of component replacement or printed wiring board modification may void any warranty or exchange allowances.
2.1 Computer Setup
Computer Setup is a system information and customization utility that can be used even when the operating system is not working or will not load. This utility includes settings that are not available in Windows.
Using Computer Setup
Information and settings in Computer Setup are accessed from the Main, Security, Advanced, or Tools menus:
1. Turn on or restart the computer. Press f10 while the
F10 = ROM-Based Setup message is displayed in the lower-left corner of the screen.
❏ To change the language, use the cursor control keys to navigate to the Advanced menu.
❏
❏
To view navigation information, press f1 .
To return to the Computer Setup menu, press esc .
Maintenance and Service Guide 2–1
Troubleshooting
2. Select the Main, Security, Advanced, or Tools menu.
3. To close Computer Setup and restart the computer:
❏ Select Exit > Exit Saving Changes, and then press enter .
– or –
❏ Select Exit > Exit Discarding Changes, and then press enter .
– or –
❏ Select Exit > Load Setup Defaults, and then press enter .
4. When you are prompted to confirm your action, press f10 .
Selecting from the File Menu
Select
System Information
Table 2-1
File Menu
To Do This
■ Change the system time and system date.
■ View identification information about the computer.
■ View specification information about the processor, memory and cache size, and system ROM.
2–2 Maintenance and Service Guide
Troubleshooting
Selecting from the Security Menu
Table 2-2
Security Menu
Select
Administrator Password
To Do This
Enter, change, or delete an Administrator password.
Power-on Password
DriveLock Passwords
Password Options
(Password options can be selected only when a power-on password has been set.)
Enter, change, or delete a power-on password.
Enable/disable DriveLock; change a DriveLock user or master password.
✎
DriveLock Settings are accessible only when you enter Computer Setup by turning on (not restarting) the computer.
Enable/disable
■ QuickLock.
■ QuickLock on Standby.
■ QuickBlank.
✎
To enable QuickLock on Standby or
QuickBlank, you must first enable
QuickLock.
Device Security Enable/disable
■ Diskette drive startup.*
■ CD-ROM or diskette startup.
✎
Settings for a DVD-ROM can be entered in the CD-ROM field.
*Not applicable to SuperDisk LS-120 drives.
Maintenance and Service Guide 2–3
Troubleshooting
Selecting from the Advanced Menu
Select
Language
Boot Order
Accessibility Options
Video Memory
Table 2-3
Advanced Menu
To Do This
Change the Computer Setup language.
Enable/disable MultiBoot, which sets a startup sequence that can include most bootable devices and media in the system.
Allows electronic and information technology to be accessible to people with varying ranges of abilities.
Displays the amount of video memory available on the computer.
Selecting from the Tools Menu
Select
Hard Drive Self Test
Table 2-4
Tools Menu
To Do This
Run a quick comprehensive self test on hard drives in the system that support the test features.
2–4 Maintenance and Service Guide
Troubleshooting
2.2 Troubleshooting Flowcharts
Table 2-5
Troubleshooting Flowcharts Overview
2.7
2.8
2.9
2.10
2.11
2.12
2.13
Flowchart Description
2.1
2.2
2.3
“Flowchart 2.1—Initial Troubleshooting”
“Flowchart 2.2—No Power, Part 1”
“Flowchart 2.3—No Power, Part 2”
2.4
2.5
2.6
“Flowchart 2.4—No Power, Part 3”
“Flowchart 2.5—No Power, Part 4”
“Flowchart 2.6—No Video, Part 1”
“Flowchart 2.7—No Video, Part 2”
“Flowchart 2.8—Nonfunctioning Docking Device (if applicable)”
“Flowchart 2.9—No Operating System (OS) Loading”
“Flowchart 2.10—No OS Loading, Hard Drive, Part 1”
“Flowchart 2.11—No OS Loading, Hard Drive, Part 2”
“Flowchart 2.12—No OS Loading, Hard Drive, Part 3”
“Flowchart 2.13—No OS Loading, Diskette Drive”
Maintenance and Service Guide 2–5
Troubleshooting
Table 2-5
Troubleshooting Flowcharts Overview (Continued)
2.17
2.18
2.19
2.20
Flowchart Description
2.14
2.15
2.16
“Flowchart 2.14—No OS Loading, Optical Drive”
“Flowchart 2.15—No Audio, Part 1”
“Flowchart 2.16—No Audio, Part 2”
“Flowchart 2.17—Nonfunctioning Device”
“Flowchart 2.18—Nonfunctioning Keyboard”
“Flowchart 2.19—Nonfunctioning Pointing Device”
“Flowchart 2.20—No Network/Modem Connection”
2–6 Maintenance and Service Guide
Troubleshooting
Flowchart 2.1—Initial Troubleshooting
Begin troubleshooting.
N
Is there power?
Y
Y
Beeps,
LEDs, or error messages?
N
Is there video?
(no boot)
N
Y
N
Is the OS loading?
Y
N
Is there sound?
Y
Go to
Check
LED board, speaker connections.
N
All drives working?
Go to
Y
Keyboard/ pointing device working?
N
Go to
Y
Connecting to network or modem?
N
Go to
Y
End
Go to
Go to
or
Go to
Maintenance and Service Guide 2–7
Troubleshooting
Flowchart 2.2—No Power, Part 1
No power
(power LED is off).
Remove from docking device
(if applicable).
N
Power up on battery power?
Y
N
Power up on AC power?
Y
N
Power up in docking device?
Y
Reset
power.*
Reset
power.*
Done
1. Reset the power cables in the docking device and at the AC outlet.
2. Be sure the AC power source is active.
3. Be sure that the power strip is working.
Y
Done
Power up in docking device?
N
Y
Y
Power up on battery power?
Power up on AC power?
N
N
Go to
Go to
*NOTES
1. On select models, there is a separate reset button.
2. On select models, the computer can be reset using the standby switch and either the lid switch or the main power switch.
Go to
Docking Device (if applicable).”
2–8 Maintenance and Service Guide
Flowchart 2.3—No Power, Part 2
Continued from
Visually check for debris in battery socket and clean if necessary.
Y
Power on?
N
Y
Check battery by recharging it, moving it to another computer, or replacing it.
N
Power on?
Done
Replace power supply
(if applicable).
N
Done Power on?
Go to
Y
Done
Troubleshooting
Maintenance and Service Guide 2–9
Troubleshooting
Flowchart 2.4—No Power, Part 3
Continued from
Plug directly into AC outlet.
Y
Power LED on?
N
Reseat AC adapter in computer and at power source.
Y
Power on?
N
N
Power outlet active?
Y
Replace power cord.
Y
Power on?
N
Done
Done
Try different outlet.
Done
External
Internal or external AC adapter?
Internal
Go to
N
Y
Replace external
AC adapter.
Power on?
Done
2–10 Maintenance and Service Guide
Flowchart 2.5—No Power, Part 4
Continued from
Open computer.
N
Loose or damaged parts?
Y
Close computer and retest.
N
Power on?
Y
Reseat loose components and boards and replace damaged items.
Replace the following items (if applicable). Check computer operation after each replacement:
1. Internal DC-DC converter*
2. Internal AC adapter
3. Processor board*
4. System board*
*NOTE: Replace these items as a set to prevent shorting out among components.
Done
Troubleshooting
Maintenance and Service Guide 2–11
Troubleshooting
Flowchart 2.6—No Video, Part 1
No video.
Stand-alone or docking device?
Docking Device
Go to
Stand-alone
*NOTE: To change from internal to external display, use the hotkey combination.
Y
Internal or external display*?
External
Adjust brightness.
Internal
Adjust brightness.
A
N
Video OK?
Check for bent pins on cable.
Y
N
Video OK?
Done
Press lid switch to ensure operation.
Y
Done Video OK?
Done
N
Replace the following one at a time. Test after each replacement.
1. Cable between computer and computer display (if applicable)
2. Display
3. System board
N
Video OK?
Try another display.
Internal and external video OK?
N
Replace system board.
Y Y
Done Done
2–12 Maintenance and Service Guide
Troubleshooting
Flowchart 2.7—No Video, Part 2
Continued from
Remove computer from docking device, if connected.
Adjust display brightness.
Check brightness of external monitor.
Y
N
Video OK?
N
Go to “A” in
N
Video OK?
Y
Check that computer is properly seated in docking device, for bent pins on cable, and for monitor connection.
Y
Video OK?
Done
Try another external monitor.
Adjust external monitor display.
Internal and external video OK?
Y
N
Go to
Docking Device (if applicable).”
Done
Done
Maintenance and Service Guide 2–13
Troubleshooting
Flowchart 2.8—Nonfunctioning Docking Device
(if applicable)
Nonfunctioning docking device.
Reset power cord in docking device and power outlet.
Check voltage setting on docking device.
Reset monitor cable connector at docking device.
N
Docking device operating?
Y
Replace docking device.
Done
Reinstall computer into docking device.
N
Docking device operating?
Y
Test replacement docking device with new computer.
Done
2–14 Maintenance and Service Guide
Troubleshooting
Flowchart 2.9—No Operating System (OS)
Loading
No OS loading.*
Reset power cord in docking device and power outlet.
No OS loading from hard drive,
go to “Flowchart 2.10—No OS Loading,
No OS loading from diskette drive,
go to “Flowchart 2.13—No OS Loading,
No OS loading from CD-ROM or DVD-ROM
drive, go to “Flowchart 2.14—No OS
No OS loading from network,
go to “Flowchart 2.20—No Network/Modem
*NOTE: Before beginning troubleshooting, always check cable connections, cable ends, and drives for bent or damaged pins.
Maintenance and Service Guide 2–15
Troubleshooting
Flowchart 2.10—No OS Loading, Hard Drive,
Part 1
OS not loading from hard drive.
Nonsystem disk message?
Y
N
Reseat external hard drive.
Y
OS loading?
N
N
Boot from
CD?
Y
Y
Check the Setup utility for correct booting order.
Boot from hard drive?
N
Done
Go to
Done
N
Boot from diskette?
Y
Y
Change boot priority through the Setup Utility and reboot.
N
Boot from hard drive?
Go to
Go to
2–16 Maintenance and Service Guide
Troubleshooting
Flowchart 2.11—No OS Loading, Hard Drive,
Part 2
Continued from
N
CD or diskette in drive?
Y
1. Replace hard drive.
2. Replace system board.
Reseat hard drive.
Hard drive accessible?
Y
Done
N
Remove diskette and reboot.
Run FDISK.
Boot from hard drive?
Y
N
Y
Boot from diskette drive?
N
N
Hard drive accessible?
Y
Go to
Done
Go to
Done
Y
Y
Hard drive partitioned?
N
Hard drive formatted?
N
Y
Computer booted?
N
Go to
Create partition, and then format hard drive to bootable
C:\ prompt.
Format hard drive and bring to a bootable
C:\ prompt.
Load OS using
Operating System disc (if applicable).
Maintenance and Service Guide 2–17
Troubleshooting
Flowchart 2.12—No OS Loading, Hard Drive,
Part 3
Y
Continued from
N
System files on hard drive?
Virus on hard drive?
Y
N
Clean virus.
N
Install OS and reboot.
OS loading from hard drive?
Y
Done
Y
Run SCANDISK and check for bad sectors.
Diagnostics on diskette?
Replace hard drive.
N
N
Can bad sectors be fixed?
Replace hard drive.
Run diagnostics and follow recommendations.
Y
N
Fix bad sectors.
Boot from hard drive?
Replace hard drive.
Y
Done
2–18 Maintenance and Service Guide
Troubleshooting
Flowchart 2.13—No OS Loading, Diskette Drive
Y
OS not loading from diskette drive.
Reseat diskette drive.
OS loading?
Done
N
Nonsystem disk message?
Y
N
N
Boot from another device?
Y
Y
Diskette drive enabled in the Setup
Utility?
N
Is diskette drive boot order correct?
Y
N
N
Bootable diskette in drive?
Install bootable diskette and reboot computer.
Y
Go to
Enable drive and cold boot computer.
N
Check diskette for system files.
Try different diskette.
Y
Nonsystem disk error?
1. Replace diskette drive.
2. Replace system board.
Y
Reset the computer.
Refer to
instructions.
N
OS loading?
Done
Change boot priority using the Setup Utility.
Go to
Maintenance and Service Guide 2–19
Troubleshooting
Flowchart 2.14—No OS Loading, Optical Drive
Y N
No OS loading from
CD-ROM or
DVD-ROM drive.
N
Disc in drive?
Y
Bootable disc in drive?
Install bootable disc and reboot computer.
Install bootable disc.
Try another bootable disc.
N
Boots from
CD or DVD?
Y
Reseat drive.
Done
Y
Boots from
CD or DVD?
N
Y
Booting from another device?
N
Y
Booting order correct?
N
Done
Go to
Reset the computer.
Refer to
for instructions.
Go to
Correct boot order using the Setup Utility.
2–20 Maintenance and Service Guide
Troubleshooting
Flowchart 2.15—No Audio, Part 1
Y
No audio.
Turn up audio internally or externally.
Audio?
N
Done
N
Computer in docking device
(if applicable)?
Y
Go to
Undock
Y
Internal audio?
Replace the docking device.
Go to
N
Audio?
Y
N
Go to
Done
Maintenance and Service Guide 2–21
Troubleshooting
Flowchart 2.16—No Audio, Part 2
Continued from
Audio driver in OS configured?
N
Reload audio drivers.
Y
Correct drivers for application?
N
Load drivers and set configuration in OS.
Y
Connect to external speaker.
Y
Audio?
N
Replace audio board and speaker connections in computer
(if applicable).
Audio?
Y
N
1. Replace internal speakers.
2. Replace audio board (if applicable).
3. Replace system board.
Done
2–22 Maintenance and Service Guide
Flowchart 2.17—Nonfunctioning Device
Nonfunctioning device.
Troubleshooting
Reseat device.
Clear
CMOS.
Y
Reattach device.
Close computer, plug in power, and reboot.
N
Device boots properly?
Unplug the nonfunctioning device from the computer and inspect cables and plugs for bent or broken pins or other damage.
N
Any physical device detected?
Y
Replace hard drive.
Fix or replace broken item.
Go to
Replace NIC.
If integrated NIC, replace system board.
Y
Device boots properly?
N
Done
Replace diskette drive.
Done
Maintenance and Service Guide 2–23
Troubleshooting
Flowchart 2.18—Nonfunctioning Keyboard
Keyboard not operating properly.
Y
Connect computer to good external keyboard.
External device works?
N
Reseat internal keyboard connector
(if applicable).
N
OK?
Y
Replace system board.
Replace internal keyboard or cable.
Y
Done OK?
N
Replace system board.
Done
2–24 Maintenance and Service Guide
Troubleshooting
Flowchart 2.19—Nonfunctioning Pointing
Device
Pointing device not operating properly.
Y
Connect computer to good external pointing device.
External device works?
N
Reseat internal pointing device connector
(if applicable).
N
OK?
Y
Done
Replace system board.
N
Replace internal pointing device or cable.
Y
OK?
Replace system board.
Done
Maintenance and Service Guide 2–25
Troubleshooting
Flowchart 2.20—No Network/Modem
Connection
No network or modem connection.
Network or modem jack active?
N
Y
Y
Digital line?
N
Y
NIC/modem configured in OS?
N
Disconnect all power from the computer and open.
Replace jack or have jack activated.
Connect to nondigital line.
Reload drivers and reconfigure.
N
OK?
Replace the
NIC/modem
(if applicable).
Y
Done
Y
Reseat NIC/modem
(if applicable).
OK?
Done
N
Replace system board.
2–26 Maintenance and Service Guide
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Key Features
- Intel® Core™2 Duo T7600 2.33 GHz
- 39.1 cm (15.4") 1920 x 1200 pixels 16:10
- 2 GB DDR2-SDRAM
- 100 GB
- AMD Mobility FireGL V5200
- Bluetooth 2.0+EDR
- Windows XP Professional