HP Compaq dx2480 Reference Guide

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Hardware Reference Manual

HP Compaq Business Desktop dx2480

Microtower Model

March 2008

This guide provides basic information for upgrading this computer

model.

Document Number : 468080-D61

Hardware Reference Guide

HP Compaq Business Desktop dx2480 Microtower Model

March 2008

This guide provides basic information for upgrading this computer model.

Microsoft, MS-DOS, Windows and Windows Vista are trademarks of Microsoft Corporation in the U.S. and other countries.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

This document contains proprietary information that is protected by copyright. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company.

WARNING: Text set off in this manner indicates that failure to follow directions

could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information.

Hardware Reference Guide

HP Compaq Business Desktop dx2480 Microtower Model

Contents

1 Product Features

Standard Configuration Features ......................................................................... 1-1

Front Panel Components ......................................................................................1-2

Rear Panel Components ....................................................................................... 1-3

Keyboard .............................................................................................................. 1-4

Windows Logo Key ............................................................................................. 1-5

Special Mouse Functions. .................................................................................... 1-5

Serial Number Location ....................................................................................... 1-6

2 Hardware Upgrades

Serviceability Features ......................................................................................... 2-1

Warnings and Cautions ........................................................................................ 2-1

Removing the Computer Access Panel ................................................................ 2-2

Removing the Front Bezel.................................................................................... 2-3

Installing Additional Memory............................................................................... 2-4

DIMMs ................................................................................................................. 2-4

DDR2-SDRAM DIMMs ...................................................................................... 2-4

Populating DIMM Sockets ................................................................................... 2-5

Installing DIMMs ................................................................................................. 2-6

Removing a 5.25" Drive Bezel Blank .................................................................. 2-8

Replacing or Upgrading a Drive .......................................................................... 2-9

Locating Drive Positions .................................................................................... 2-10

Removing a Drive .............................................................................................. 2-11

Replacing a Drive ............................................................................................... 2-13

Install Second Hard Disk ................................................................................... 2-16

Removing or Installing an Expansion Card ....................................................... 2-19

Reassembling the Computer .............................................................................. 2-25

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Contents

3 Battery Replacement

...................................................................................

4 Security Lock Provisions

Installing a Security Lock Mechanical Lock Chasis intrusion Lock

.......................................................................................................

...................................................................................

................................................................................................

5 Electrostatic Discharge

Preventing Electrostatic Damage

Grounding

Methods..............................................................................................

.........................................................................

6 Computer Operating Guidelines, Routine Care and Shipping

Preparation

Computer Operating Guidelines and Routine Care .............................................. 6-1

Optical Drive Precautions .................................................................................... 6-2

Operation Cleaning Safety

Shipping Preparation ............................................................................................ 6-3

.............................................................................................................

...............................................................................................................

...................................................................................................................

3-1

4-1 4-1 4-1

5-1 5-1

6-2 6-2 6-2

7 Computer Setup (F10) Utility

Computer Setup (F10) Utility ................................ ............................................ 7-1

Using Computer Setup (F10) Utilities

Recovering the Configuration Settings..........................

.................................................................

..........................................

7-2 7-4

8 Troubleshooting Guide

Computer Diagnostic Features ................................

Troubleshooting ........................................................

............................................

..............................................

8- 1 8- 8

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Standard Configuration Features

The HP Compaq Microtower features may vary depending on the model. For a complete listing of the hardware and software installed in the computer, run the Diagnostics for Windows utility. Instructions for using this utility are provided in the Troubleshooting Guide on the Documentation and Diagnostics CD.

Product Features

Microtower Configuration

Photos depicted may vary as per actual machine

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Product Features

Front Panel Components

Drive configuration may vary by model.

Front Panel Components

Optical Drives

Optical Drive Activity Lights

Diskette Drive (optional)

Diskette Drive Activity Light (optional)

Power Button

Optical Drive Eject Button

Headphone Jack

Microphone Connector

Diskette Drive Eject Button (optional)

Power On Light

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USB (Universal Serial Bus) Ports

Hard Drive Activity Light

Photos depicted may vary as per actual machine

Product Features

Rear Panel Components

2 3 5 6 7 8 10

Rear Panel Components

1 7

2 8

3 9

4 10

Power Cord Connector RJ-45 Network Connector .

Voltage Select Switch Parallel Port Connector

PS/2 Mouse Connector Monitor Connector

PS/2 Keyboard Connector Headphone/Line-Out Connector

Universal Serial Bus (USB) Audio/Line-In Connector

Serial Port Connector Microphone Connector

944

Arrangement and number of connectors may vary by model.

Photos depicted may vary as per actual machine

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Product Features

Keyboard

Keyboard Components

Function Keys Perform special functions depending on the software

application being used.

Editing Keys Includes the following: Insert, Home, Page Up, Delete, End,

and Page Down. .

Status Lights Indicate the status of the computer and keyboard settings

(Num Lock, Caps Lock, and Scroll Lock).

Numeric Keys Work like a calculator keypad.

Arrow Keys Used to navigate through a document or Web site. These

keys allow you to move left, right, up, and down, using the keyboard instead of the mouse.

Ctrl Keys Used in combination with another key; its effect depends

on the application software you are using.

Application Key* Used (like the right mouse button) to open pop-up menus

in a Microsoft Office application. May perform other functions in other software applications.

Windows Logo Keys* Used to open the Start menu in Microsoft Windows. Used

in combination with other keys to perform other functions.

Alt Keys Used in combination with another key; its effect depends

on the application software you are using. *Keys available in select geographic regions.

Photos depicted may vary as per actual machine

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Product Features

Windows Logo Key

Use the Windows Logo key in combination with other keys to perform certain functions available in the Windows operating system. Refer to the "Keyboard" section to identify the Windows Logo key.

Windows Logo Key Functions

Windows Logo Key Displays or hides the Start menu.

Windows Logo Key + d Displays the Desktop.

Windows Logo Key + m Minimizes all open applications.

Shift + Windows Logo Key + m Undoes Minimize All.

Windows Logo Key + e Launches My Computer.

Windows Logo Key + f Launches Find Document.

Windows Logo Key + Ctrl + f Launches Find Computer.

Windows Logo Key + F1 Launches Windows Help.

Windows Logo Key + l Locks the computer if you are connected to a

network domain, or allows you to switch users if you are not connected to a network domain.

Windows Logo Key + r Launches the Run dialog box.

Windows Logo Key + u Launches the Utility Manager.

Windows Logo Key + Tab Activates the next Taskbar button.

Special Mouse Functions

Most software applications support the use of a mouse. The functions assigned to each mouse button depend on the software applications you are using.

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Product Features

Serial Number Location

Each computer has a unique serial number and a product ID number that are located on the top cover of the computer. Keep these numbers available for use when contacting customer service for assistance.

Serial Number and Product ID Location

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Serviceability Features

The Microtower computer includes features that make it easy to upgrade and service. A Torx T-15 screwdriver is needed for many of the installation procedures described in this chapter.

Warnings and Cautions

Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and warnings in this guide.

WARNING: To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall

outlet and allow the internal system components to cool before touching.

WARNING: To reduce the risk of electrical shock, fire, or damage to the

equipment, do not plug telecommunications/telephone connectors into the network interface controller (NIC) receptacles.

Hardware Upgrades

WARNING: To reduce the risk of electrical shock, before removing the

computer cover ensure that telecommunication/telephone connector (TNV circuit) are disconnected

CAUTION: Static electricity can damage the electrical components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. See Chapter 5, "Electrostatic Discharge" for more information.

CAUTION: Before removing the computer cover, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet.

CAUTION: To reduce the risk of fire, use only No. 26 AWG or larger (e.g., 24 AWG) UL Listed or CSA Certified Telecommunication Line Cord

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Hardware Upgrades

Removing the Computer Access Panel

CAUTION: CAUTION: Before removing the computer access panel, ensure

that the computer is turned off and that the power cord is disconnected from the electrical outlet.

To remove the computer access panel:

1. Turn off the computer properly through the operating system and turn off any external devices.

2. Disconnect the power cord from the power outlet and the computer, and disconnect any external devices.

3. Remove the screw that secures the access panel to the computer chassis.

4. Slide the access panel back about 2.5 cm (1 inch), then lift it off the unit.

To replace the access panel, reverse the removal steps.

Removing the Computer Access Panel

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Hardware Upgrades

Removing the Front Bezel

To remove the front bezel:

1. Turn off the computer properly through the operating system and turn

off any external devices.

2. Disconnect the power cord from the power outlet and the computer, and

disconnect any external devices.

3. To remove the front bezel, press down on all four tabs

at the bottom of the bezel and then rotate the bezel off the chassis .

Removing the Front Bezel

Photos depicted may vary as per actual machine

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Hardware Upgrades

Installing Additional Memory

The computer comes with double data rate synchronous dynamic random access memory (DDR2-SDRAM) dual inline memory modules (DIMMs).

DIMMs

The memory sockets on the system board can be populated with up to four industry-standard DIMMs. These memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory support, you can populate the system board with up to 8GB* of memory configured in a high-performing dual channel mode.

DDR2-SDRAM DIMMs

For proper system operation, if the computer supports DDR2 SDRAM DIMMs, the DIMMs must be:

Industry-standard 240-pin

Unbuffered 800 MHz-compliant

DDR2 800 MHz DIMM

256Mbit, 512Mbit, and 1Gbit non-ECC memory technologies single-sided and double-sided DIMMS

The system will not start if you install unsupported DIMMs.

*8GB Memory is supported only with Windows Vista 64 bit or

Freedos operating systems

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Hardware Upgrades

Populating DIMM Sockets

The system will automatically operate in single channel mode, dual channel Asymmetric mode, depending on how the DIMMs are installed.

The system will operate in single channel mode if the DIMM

sockets are populated in one channel only.

The system will operate in dual channel Asymmetric mode if the

total memory capacity of the DIMMs in Channel A is not equal to the total memory capacity of the DIMMs in Channel B.

There are Four DIMM sockets on the system board, with two sockets per channel.

DIMM Socket

Item Description Socket Color

DIMM socket, Channel A

DIMM socket, Channel B

Yellow

Red

Yellow

Red

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Hardware Upgrades

Installing DIMMs

CAUTION: The memory module sockets have gold metal contacts. When

upgrading the memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other.

CAUTION: Static electricity can damage the electronic components of the computer or optional cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. For more informations, refer to Chapter 5, "Electrostatic Discharge."

CAUTION: When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module.

1. Turn off the computer properly through the operating system and

turn off any external devices.

2. Disconnect the power cord from the power outlet and disconnect

any external devices.

3. Remove the computer access panel.

4. Locate the memory module sockets on the system board.

WARNING: To reduce risk of personal injury from hot surfaces, allow the

internal system components to cool before touching.

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Hardware Upgrades

5. Open both latches of the memory module socket , and insert the

memory module into the socket

Installing a DIMM

A memory module can be installed in only one way. Match the notch on the module with the tab on the memory socket.

6. Push the module down into the socket, ensuring that the module is fully inserted and properly seated. Make sure the latches are in the closed position .

7. Repeat steps 5 and 6 to install any additional modules.

8. Replace the access panel.

The computer should automatically recognize the additional memory the next time you turn on the computer.

Photos depicted may vary as per actual machine

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Hardware Upgrades

Removing a 5.25" Drive Bezel Blank

If the computer was not shipped with a drive in the 5.25" option bay, the bay will be covered by a bezel blank. If you add a drive to the option bay, you must first remove the bezel blank.

1. Turn off the computer properly through the operating system and

turn off any external devices.

2. Disconnect the power cord from the power outlet and the

computer, and disconnect any external devices.

3. Remove the access panel and front bezel. Refer to "Removing the

Computer Access Panel" and "Removing the Front Bezel".

4. While facing the inside of the front bezel, press the two retaining

tabs on the right towards the outer edge of the bezel and pull the bezel blank inwards to remove it .

Removing a Bezel Blank

To install a bezel blank, slide the left side of the blank into the two retainer slots on the left side of the front bezel then snap the right side

of the blank into place.

Photos depicted may vary as per actual machine

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Hardware Upgrades

Replacing or Upgrading a Drive

The computer supports up to six drives that may be installed in various configurations.

This section describes the procedure for replacing or upgrading the storage drives. A Torx screwdriver is needed to remove and install the guide screws and retainer screws on a drive.

CAUTION: Make sure you back up your personal files on the hard drive to an external storage device, such as a CD, before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard drive, you will need to run the Restore Plus! DVD to load the HP factory-installed files.

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Hardware Upgrades

Locating Drive Positions

Drive Positions

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Hardware Upgrades

First 5.25-inch, half-height bays for optional drives Second 5.25-inch,

half-height bays for optional drives

Two Nos. standard 3.5-inch, one-third height bays

(1.44-MB diskette drive shown)

Two Nos. internal 3.5-inch, one-third height bays for hard drives

Removing a Drive

1. Turn off the computer properly through the operating system and turn off any external devices. Disconnect the power cord from the power outlet and disconnect any external devices. .

2. Remove the access panel and front bezel.

3. Disconnect the power and data cables from the back of the drive, as indicated in the following illustrations.

4. Remove all the screws that secures the drives in the drive bay. Slide the drive disk forward and out of the bay.

Removing the Drives

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Hardware Upgrades

5. Hard disk is inserted or slide out from the back.

Removing the Hard disk

6. Remove all the screws that secure the floppy drive in the bay.

Slide the drive disk forward and out of the bay.

WARNING: There may be sharp edges on the insides of the bay

opening after the shield has been removed.

Photos depicted may vary as per actual machine

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Hardware Upgrades

Replacing a Drive

CAUTION: To prevent loss of work and damage to the computer or drive:

If you are inserting or removing a hard drive, shut down the operating system properly, then turn off the computer. Do not remove a hard drive while the computer is on or in standby mode.

Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid touching the connector. For more information about preventing electrostatic damage, refer to Chapter 5, "Electrostatic Discharge."

Handle a drive carefully; do not drop it.

Do not use excessive force when inserting a drive.

Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such as monitors or speakers.

Make sure to back up the data on the old hard drive before removing

it so that you can install the data onto the new hard drive.

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Hardware Upgrades

1. Slide the floppy drive into the drive bay, making sure to align

the guide screws with the guide slots, until the drive snaps into place.

Sliding the Drives into the Drive Cage

2. Slide the optical drive into the drive bay, making sure to align

the screw holes with the drive bays holes. Secure the Drive by tighten all two screws.

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Hardware Upgrades

3. Slide in the hard disk from the front to back, making sure to

align the screw holes with the drive bays holes. Secure the Drive by tighten all the screws at each bottom side

Sliding the Hard Drive into the Drive Cage

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Hardware Upgrades

Install Second Hard Disk

A second Hard disk should be installed as per following

1. Secure hard drive in hard drive bay located in

(as indicated by arrow ).

2. Secure the second hard drive by tightening the 2 screws at

bottom.

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Hardware Upgrades

3. Connect one end of the data cables to the second hard drive as shown above.

4. The other end connect to the system board.

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Hardware Upgrades

5. Complete the procedure described in the "Reassembling the Computer" section of this chapter.

6. Turn on the computer.

If you replaced the primary hard drive, insert the Restore Plus! DVD to restore the operating system, software drivers, and/or any

software applications that were preinstalled on the computer from HP. Follow the instructions in the guide included with the restore DVD. When the restore process has completed, reinstall any personal files that you backed up before replacing the hard drive.

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Hardware Upgrades

Removing or Installing an Expansion Card

This computer has two PCI expansion slots, one PCI-Express x 1 & one PCI-Express x 16 slots

Expansion Slot Locations

Photos depicted may vary as per actual machine

PCI -

E x16 Slot

PCI -E x1 Slot

PCI Slot

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Hardware Upgrades

To remove, replace, or add an expansion card.

1. Turn off the computer properly through the operating system and turn off any external devices. Disconnect the power cord from the power outlet and disconnect any external devices.

2. Remove the access panel and lay the computer on its side with the opening to internal parts where the access panel was located facing up.

3. On the rear panel of the computer, remove the screw that secures the slot cover lock in place and slide the slot cover lock away from the slots to remove it from the computer .

Releasing the Slot Cover Lock

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Hardware Upgrades

4. Before installing an expansion card, remove the expansion slot

cover or the existing expansion card.

a. If you are installing an expansion card in a vacant socket,

remove the appropriate expansion slot cover on the back of the chassis. Pull the slot cover straight up from the socket then away from the inside of the chassis.

Removing an Expansion Slot Cover

Photos depicted may vary as per actual machine

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Hardware Upgrades

b. If removing a standard PCI expansion card, hold the card at

each end, and carefully rock it back and forth until the connectors pull free from the socket. Pull the expansion card straight up from the socket then away from the inside of the chassis to release it from the chassis frame. Be sure not

to scrape the card against the other components.

Removing an Expansion Card

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Hardware Upgrades

5. If replacing or adding a new expansion card, hold the card just above the expansion slot on the system board then move the card toward the rear of the chassis so that the bottom of the

bracket on the card slides into the small slot on the chassis. Gently press the card straight down into the expansion slot on the system board .

Replacing or Adding an Expansion Card

6. While holding the expansion card bracket against the chassis, slide the slot cover lock down toward the expansion card bracket to secure it in place and replace the screw that secures the slot cover lock.

7. Connect the external cables to the installed card, if needed. Connect internal cables to the system board, if needed.

8. Replace the computer access panel and reconnect the power cable.

When installing an expansion card, press firmly on the card so that the whole connector seats properly in the expansion card slot.

Photos depicted may vary as per actual machine

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Hardware Upgrades

9. If you are replacing an expansion card, store the old card in the anti-static packaging that contained the new card.

10. While holding the expansion card bracket against the chassis, slide the slot cover lock down toward the expansion card brackets and slot covers to secure them in place and replace the screw that secures the slot cover lock.

Securing the Expansion Cards and Slot Covers

11. Complete the procedure described in the "Reassembling the Computer" section of this chapter.

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Hardware Upgrades

Reassembling the Computer

1. Position the chassis in the upright position. Insert the four tabs at the bottom of the bezel . Snap into the slots of the chassis. Align the two hooks on the top of the bezel into the rectangular holes on the chassis then rotate the bezel into the place .

Replacing the Front Bezel

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Hardware Upgrades

2. Place the side access panel in the proper position on the chassis and slide it into place . Ensure that the hole for the screw is aligned with the hole in the chassis and tighten the screw .

Replacing the Side Access Panel

3. Reconnect the power cable to the computer and plug the cable into an electrical outlet.

4. Reconnect all peripheral devices to the computer.

WARNING: To reduce the risk of electrical shock, fire, or damage to the

equipment, do not plug telecommunications or telephone connectors into the network interface controller (NIC) ports.

5. Turn on the computer by pressing the power button.

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Battery Replacement

The battery that comes with the computer provides power to the realtime clock. When replacing the battery, use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt lithium coin cell battery.

The lifetime of the lithium battery can be extended by plugging the

computer into a live AC wall socket. The lithium battery is only used when the computer is NOT connected to AC power.

WARNING: The computer contains an internal lithium manganese dioxide

battery. There is a risk of fire and burns if the battery is not handled properly. To reduce the risk of personal injury:

Do not attempt to recharge the battery.

Do not expose to temperatures higher than 60°C (140ºF). Do not disassemble, crush, puncture, short external contacts, or

dispose of in fire or water. Replace the battery only with the HP spare designated for this

product.

CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Troubleshooting Guide on the Documentation and

Diagnostics CD for information on backing up the CMOS settings.

Batteries, battery packs, and accumulators should not be disposed of togethe with the general household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, their authorized partners, or their agents.

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CAUTION: Static electricity can damage the electronic components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

1. Turn off the computer properly through the operating system, then turn off any external devices.

2. Disconnect the power cord from the power outlet and disconnect any external devices. Then remove the computer access panel.

It may be necessary to remove an expansion card to gain access to the

battery.

3. Locate the battery and battery holder on the system board.

4. Depending on the type of battery holder on the system board, complete the following instructions to replace the battery.

a.To release the battery from its holder, squeeze the metal

clamp that extends above one edge of the battery. When the battery pops up, lift it out .

b.To insert the new battery, slide one edge of the replacement

battery under the holder's lip with the positive side up. Push the other edge down until the clamp snaps over the other edge of the battery .

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Removing and Replacing a Coin Cell Battery

After the battery has been replaced, use the following steps to

complete this procedure.

5. Replace the computer access panel.

6. Plug in the computer and turn on power to the computer.

7. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD.

Power Supply Notice

WARNING: The power supply contains hazardous moving parts.

Keep fingers and other body parts away from ventilation openings.

Power Supply Label

The following label or equivalent is located on the surface of power supply:

WARNING : HAZARDOUS MOVING PARTS

KEEP FINGERS AND OTHER BODY PARTS AWAY

Power Supply Label

WARNING: System and CPU fans contain hazardous moving parts.

keep fingers and other body parts aways

System and CPU fan label

WARNING: System and CPU fans contain hazardous moving parts.

keep fingers and other body parts aways

WARNING : HAZARDOUS MOVING PARTS

KEEP FINGERS AND OTHER BODY PARTS AWAY

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Security Lock Provisions

Installing a Security Lock

The security locks displayed on the below page can be used to secure the Microtower computer by putting a mechanical lock

Mechanical Lock

Installing a Mechanical Lock

Chassis Intrusion Switch

Chassis Intrusion (CI) Switch, is a combination of hardware and software technology that can alert you when the computer cover or side panel has been removed. There are various levels of protection, as described in the following table.

Status /Mode Description

System switched off and power plug completely removed, completely OFF mode

Power cable plugged in (power ON) , but System in Shutdown Mode

System in Power Management Mode

System in Running/User Mode

To achieve this functionality please refer to computer setup, see the Computer Setup (F10) Utility Guide.

When the computer is restarted, the screen displays a message indicating that the computer cover or side panel has been removed. Make sure that any system access was authorized and press F1 to continue

At the next boot, the screen displays a message indicating that the computer cover or side panel has been removed. Make sure that any system access was authorized and press F1 to continue

The user is notified at the next boot with a message indicating that the computer cover or side panel has been removed. Ensure that any system access was authorized and press F1 to continue

Photos depicted may vary as per actual machine

Setting the Chassis Intrusion Switch

To set the CI Protection, complete the following steps:

1. Fix the CI Switch on the Back panel of Chassis as directed in the diagram.

2. Connect the CI Switch cable to the CI Pins on the system motherboard.

3. Fix the Side panel/cover on the chassis.

Installing CI switch at the back panel

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For maximum security, be sure to establish a setup password. The setup password prevents unauthorized access to the Computer Setup utility

Connecting CI switch to CI pins on motherboard

Electrostatic Discharge

A discharge of static electricity from a finger or other conductor may damage system boards or other static-sensitive devices. This type of damage may reduce the life expectancy of the device.

Preventing Electrostatic Damage

To prevent electrostatic damage, observe the following precautions:

n Avoid hand contact by transporting and storing products in

static-safe containers.

n Keep electrostatic-sensitive parts in their containers until they

arrive at static-free workstations.

n Place parts on a grounded surface before removing them from

their containers.

n Avoid touching pins, leads, or circuitry. n Always be properly grounded when touching a static-sensitive

component or assembly.

Grounding Methods

There are several methods for grounding. Use one or more of the following methods when handling or installing electrostatic-sensitive parts:

n Use a wrist strap connected by a ground cord to a grounded

workstation or computer chassis. Wrist straps are flexible straps with a minimum of 1 megohm +/- 10 percent resistance in the ground cords. To provide proper ground, wear the strap snug against the skin.

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n Use heelstraps, toestraps, or bootstraps at standing workstations.

Wear the straps on both feet when standing on conductive floors or dissipating floor mats.

n Use conductive field service tools. n Use a portable field service kit with a folding static-dissipating

work mat.

If you do not have any of the suggested equipment for proper grounding, contact an HP authorized dealer, reseller, or service provider.

For more information on static electricity, contact an HP authorized

dealer, reseller, or service provider.

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Computer Operating Guidelines,

Routine Care and Shipping Preparation

Computer Operating Guidelines and Routine Care

Follow these guidelines to take care of the computer and monitor:

n Operate the computer on a sturdy, level surface. Leave a 10.2-

cm (4-inch) clearance at the back of the system unit and above the monitor to permit the required airflow.

n Never operate the computer with the cover or side panel

removed.

n Never restrict the airflow into the computer by blocking the front

vents or air intake. Do not place the keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow.

n Keep the computer away from excessive moisture, direct

sunlight, and extremes of heat and cold.

n Keep liquids away from the computer and keyboard. n Never cover the ventilation slots on the monitor with any type of

material.

n Install or enable power management functions of the operating

system or other software, including sleep states.

n Turn off the computer before you do either of the following:

Wipe the exterior of the computer with a soft, damp cloth as needed. Using cleaning products may discolor or damage the finish.

Occasionally clean the air vents on the front and back of the computer. Lint and other foreign matter can block the vents and limit the airflow.

Hardware Reference Guide www.hp.com/in 6-1

Optical Drive Precautions

Be sure to observe the following guidelines while operating or cleaning the optical drive.

Operation

Cleaning

Safety

n Do not move the drive during operation. This may cause it to

malfunction during reading.

n Avoid exposing the drive to sudden changes in temperature, as

condensation may form inside the unit. If the temperature suddenly changes while the drive is on, wait at least one hour before you turn off the power. If you operate the unit immediately, it may malfunction while reading.

n Avoid placing the drive in a location that is subject to high

humidity, extreme temperatures, mechanical vibration, or direct sunlight.

n Clean the panel and controls with a soft, dry cloth or a soft cloth

lightly moistened with a mild detergent solution. Never spray cleaning fluids directly on the unit.

n Avoid using any type of solvent, such as alcohol or benzene,

which may damage the finish.

If any object or liquid falls into the drive, immediately unplug the computer and have it checked by an authorized HP service provider.

Hardware Reference Guide www.hp.com/in 6-2

Shipping Preparation

Follow these suggestions when preparing to ship the computer:

1. Back up the hard drive files on PD discs, tape cartridges, CDs, or diskettes. Be sure that the backup media is not exposed to electrical or magnetic impulses while stored or in transit.

The hard drive locks automatically when the system power

is turned off.

2. Remove and store any program diskettes from the diskette drives.

3. Insert a blank diskette into the diskette drive to protect the drive while in transit. Do not use a diskette on which you have stored or plan to store data.

4. Turn off the computer and external devices.

5. Disconnect the power cord from the electrical outlet, then from the computer.

6. Disconnect the system components and external devices from their power sources, then from the computer.

Ensure that all boards are seated properly and secured in the board

slots before shipping the computer.

7. Pack the system components and external devices in their original packing boxes or similar packaging with sufficient packing material to protect them.

Hardware Reference Guide www.hp.com/in 6-3

Computer Setup (F10) Utility Guide

HP Compaq Business Desktop dx2480

Microtower Model

March 2008

This guide provides instructions on how to use Computer Setup. This tool is used to reconfigure and modify computer default settings when new hardware is installed and for maintenance purposes.

Microsoft, MS-DOS, Windows and Windows Vista are trademarks of Microsoft Corporation in the U.S. and other countries.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty.HP shall not be liable for technical or editorial errors or omissions contained herein.

This document contains proprietary information that is protected by copyright. No part of this document may be photocopied,reproduced or translated to another language without the prior written consent of Hewlett-Packard Company.

WARNING: Text set off in this manner indicates that failure to follow directions

could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information.

Computer Setup (F10) Utility Guide

HP Compaq Business Desktop dx2480 Microtower Model

Contents

Computer Setup (F10) Utility

Computer Setup (F10) Utilities ……………………………………………………….... 7-1

Using Computer Setup (F10) Utilities …………………………………………….. 7-2

System Information …….………………………………………………......…………. 7-3

S/N …………………………………………………………………………………… 7-4

Product Name ….……………………………………………………………………..... 7-4

Set OwnerShip TAG [Press Enter] …………………………………………………….. 7-4 OwnerShip TAG ……………………………………………………………………….. 7-4 BIOS version …………………………...……………………………………………… 7-4 BIOS Release Date ………………...………………………………………………….. 7-4 System Chipset Type …………………………………………...……………………… 7-4 Processor Type ……………..………………………………………………………….. 7-4 Processor Speed ………………………..………………………………………………. 7-4 CPU ID ……………………..…………………………………………………………. 7-4 L1 Cache Size ………………………………………………………………………. 7-4 L2 Cache Size ...………………………….……………………………………………. 7-4 Memory DIMM1 .………………………………………………………………….. 7-4 Memory DIMM2 ………………………………………………………………………. 7-4

Memory DIMM3 ….........................................……………………………………… 7-4

Memory DIMM4 ………………………………………………………………………. 7-4 DDR Memory size …………………………………………………………………….. 7-4 UUID …………………………………………………………………………………. . 7-4 Chassis Serial Number ………………………………………………………………… 7-4 Set Asset TAG Number[Press Enter] ……………………………………………….. … 7-4 Asset TAG Number ……………………………………………………………………. 7-4

Integrated MAC …………………………………………………………................... 7-4

Standard CMOS Feature …………………………………………………………….... 7-4

System Date …………………………………………………………………………... 7-4

System Time ……………………………………………………………...................... 7-4

SATA PORT 0 ...……………………………………………………………………….. 7-4 SATA PORT 1 ..……………………………………………………………………….. 7-4

SATA PORT 2 ….....……………………………………………………………………. 7-4

SATA PORT 3 ….....…………………………………………………………………… 7-4

IDE Channel 0 &1Master …………………………………………………………….. 7-5 Access Mode …………...……………………………………………………………… 7-5 Halt On ……………………………………………………………………………….. 7-5 SATA Controller ……………………………………………………………………… 7-5 LEGACY Mode Support …………………………………………………………… 7-5 Advanced BIOS Features …………………………………………………………… 7-5 Quick Power On Self Test …………………………………………………………. 7-6 Hard Disk Boot Priority………………………………………………………………. 7-6 CDROM Boot Priority………………………………………………………………… 7-6

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Contents

First Boot Device ……………………………………………………………………… 7-6

Second Boot Device ………………………………………………………………....... 7-6

Third Boot Device……………………………...……………………………………… 7-6

Boot Other Device ...............................………………...........................… 7-6

APIC Mode…………………………………………………………………………… 7-6 Security option………………………………………………………………………… 7-6 F7(Diagnostic)Support………………………………………………………………. 7-6 F11 Prompt……………………………………………………………………………….7-6 Advanced Chipset Features………………………………………………………………7-6 PEG/Onchip VGA Controller…………………………………………………………… 7-6 On-Chip Frame Buffer Size…………………………………………………………… 7-6 DVMT Mode……………………………………………………………………………. 7-6 IGD DVMT/Fixed Memory…………………………………………………………… 7-7 Integrated Peripherals………………………………………………………………….7-7 USB Controller…………………………………………………………………………. 7-7 USB Legacy Support…………………………………………………………………… 7-7 Azalia Codec…………………………………………………………………………. 7-7 Onboard LAN………………………………………………………………………….7-7 Onboard LAN Boot ROM………………………………………………………………. 7-7 Serial Port……………………………………………………………………………….. 7-7 Parallel Port…………………………………………………………………………….. 7-7 Parallel Port Mode……………………………………………………………………… 7-7 ECP Mode Use DMA…………………………………………………………………. 7-7 Power Management Setup……………………………………………………………… 7-8 ACPI Function………………………………………………………………………….. 7-8 ACPI Suspend Type…………………………………………………………………… 7-8 Restore On AC/Power Loss…………………………………………………………… 7-8

Resume On PCI PME……………………………………………………………….... 7-8

Resume On PCI-E PME …………………………………………………………… 7-8

Wake On Ring………………………………………………………………….....… 7-8

Resume On Alarm…………………………………………………………………….. 7-8 Date(of Month)Alarm………………………………………………………………… 7-8

Time(hh:mm:ss)Alarm…………………………………………………………........ 7-8

HPET Mode…………………………………………………………………………..... 7-8

Hardware Monitor Setup…………………………………………………………….... 7-9

Reset Case Open Status……………………………………………………………..… 7-9

Case Opened………………………………………………………………………….... 7-9

CPU Temperature…………………………………………………………………….... 7-9

CPU Fan Speed……………………………………………………………………… 7-9 System Temperature…………………………………………………………………… 7-9 System Fan Speed…………………………………………………………………….. 7-9 CPU Fan Fault Detect………………………………………………………………… 7-9 System Fan Fault Detect……………………………………………………………… 7-9

Load Default Settings………………………………………………......................... 7-9

Set Supervisor Password……………………………………………………………… 7-9 Set User Password……………………………………………………………………. 7-9 Save Settings and Exit…………………………………………………………………… 7-9 Exit Without Saving……………………………………………………………………. 7-9

Computer Setup (F10) Utility Guide www.hp.com/in iv

Computer Setup (F10) Utility

Computer Setup (F10) Utilities

Use Computer Setup (F10) Utility to do the following;

Change factory default settings.

Set the system date and time.

Set,view,change,or verify the system configuration,including

settings for processor, graphics, memory, audio, storage, communications,and input devices.

Modify the boot order of bootable devices such as hard drives,

optical drives,orUSB flash media devices.

Enable or disable Quick Power-On Self Test,which is faster than a

full boot but does not run all of the diagnostic tests run during a full boot.

Enter the Asset Tag or property identification number assigned by the company to this computer.

Establish a supervisor password that controls access to Computer Setup (F10) Utility and the settings described in this section.

To secure integrated I/O functionality,including the serial,USB,or

parallel ports,audio,or embedded NIC,so that they cannot be used until they are unsecured.

Enable or disble removable media boot ability.

Enable or disable legacy diskette write ability(when supported by

hardware).

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Computer Setup (F10) Utility

Using Computer Setup (F10) Utilities

Computer Setup can be accessed only by turning the computer on or restarting the system. To access the Computer Setup Utility menu, complete the following steps:

1. Turn on or restart the computer. If you are in Microsoft Windows, click Start > Shut Down > Restart.

2. As soon as the computer is turned on, press and hold the F10 key until you enter Computer Setup.

If you do not press the F10 key at the appropriate time, you must

restart the computer and press and hold the F10 key again to access the utility.

3. The Computer Setup Utility screen is divided into menu headings and actions. Eight menu headings appear on the

Computer Setup Utility screen:

n System Information n Standard CMOS Features n Advanced BIOS Features n Advanced Chipset Features n Integrated Peripherals n Power Management Setup n Hardware Monitor Setup

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Computer Setup (F10) Utility

Five action choices are listed on the Computer Setup Utility screen:

n Load Default Settings n Set Supervisor Password n Set User Password n Save Setting and Exit n Exit Without Saving

Use the arrow keys to select the appropriate heading, then press

Enter. Use the arrow (up and down) keys to select the option you

want, then press Enter. To return to the previous screen, press Esc.

4. To apply and save changes, press F10 or select Save & Exit Setup

on the Computer Setup Utility screen and press Enter.

If you have made changes that you do not want applied, select Exit Without Saving and press Enter.

CAUTION: Do NOT turn the computer power OFF while the ROM is saving the F10 Computer Setup changes because the CMOS could become corrupted. It is safe to turn off the computer only after exiting the F10 Setup screen.

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Computer Setup (F10) Utility

Computer Setup (Continued)

Heading Option Description

System Information System S/N (view only)

Product Name (view only)

Set OwnerShip TAG

[Press Enter] Enter ownership tag assigned by the owner.

OwnerShip TAG (view only)

BIOS Version (view only)

BIOS Release Date (view only)

System Chipset Type (view only)

Processor Type (view only)

Processor Speed (view only)

CPU ID (view only)

L1 Cache Size (view only)

L2 Cache Size (view only)

Memory DIMM1 (view only)

Memory DIMM2 (view only)

Memory DIMM3

Memory DIMM4

DDR Memory Size

UUID (view only)

Chassis Serial Number (view only)

Set Asset TAG Number

[Press Enter] Enter asset tag assigned by the company.

Asset TAG Number (view only)

Integrated MAC (view only)

Standard System Date Allows you to set system date.

CMOS System Time Allows you to set system time.

Features Floppy Drive A View 1.44MB,3.5” or None

SATA Port 0 HDD Auto Detection SATA Port 1 SATA Port 2 SATA Port 3

(view only)

Support for specific Computer Setup options may vary depending on the hardware configuration

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Computer Setup (F10) Utility

Computer Setup (Continued)

Heading Option Description

IDE Channel 0 Master This allows you to detect the device. IDE Channel 1 Master Also it allows you to set the IDE deviceto:

• None

• Auto(default)

• Manual

Access Mode This allows you to set the access mode to:

• CHS

• LBA

• Large

• Auto(Default)

Also,this allows you to see the Hard disk information. (view only):

• Capacity

• Cylinder

• Head

• Precomp

• Landing Zone

• Sector

Halt On Allows you to set at:

• All errors

• No errors

• All,but Keyboard

SATA Controller This allows you to set for:

• Disabled

• Enabled (default)

LEGACY Mode support This allows you to set for:

• Enabled (default)

• Disabled

Support for specific Computer Setup options may vary depending on the hardware configuration

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Computer Setup (F10) Utility

Computer Setup (Continued)

Heading Option Description

Advanced BIOS Features

Quick Power On Self Test Disables/enables the system to skip

certain tests while booting. Enabling this feature decreases the time required to boot the system.

Hard Disk Boot Priority

CDROM Boot Priority Allows you to change the ODD order First Boot Device Allows you to specify which devices will Second Boot Device boot first, second, and third, or to Third Boot Device disable

Boot Other Device Disables/enables boot other device.

APIC Mode Disables/enables the APIC mode. Security Option Setup

F7 (Diagnostic) Support Allows to Enable / Disable the BIOS

Allows you to specify the order of hard drive devices. The first drive in the order has priority in boot sequence and is recognized as drive C (if any device attached).

System

diagnostic tool

F11 Prompt

Advanced Chipset Features

Support for specific Computer Setup options may vary depending on the hardware

configuration

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PEG/onchip VGA controller This allows you to set the first initiation

On-chip Frame Allow you to ser On-Chip Frame Buffer

Buffer Size • 1MB

• 8MB

DVMT Mode Allows you to set DVMT Mode to:

• Fixed

Allows to Enable/disable the ability to F11 support ( Recovery option).

the monitor display:

• Onchip VGA

• PEG Port

• Auto(default)

size to

• DVMT

Computer Setup (F10) Utility

Computer Setup (Continued)

Heading Option Description

Advanced Chipset Features

Integrated USB Controller Disables/enables on board USB Peripherals controller

Onboard LAN Disables/enables onboard LAN

Serial Port Allows you to select a setting for the

IGD DVMT/Fixed This allows you to set memory size to: Memory • 128MB

• 256MB

• MAX

USB Legacy Support Disables/enables USB Keyboard

support

Azalia Audio Enable

Disabled

controller.

Onboard LAN Boot Disables/enables the boot ROM of the

ROM onboard LAN chip.

onboard serial port

•Disabled

•3F8/IRQ4

•2F8/IRQ3

•3E8/IRQ4

•2E8/IRQ3

•Auto

Parallel port Allows you to select a setting for the

onboard parallel port:

•Disabled

•378/IRQ7

•278/IRQ5

•3BC/IRQ7

Parallel Port Mode Allows you to select parallel port mode:

•SPP

•EPP

•ECP

•ECP+EPP

ECP Mode Use DMA 3 (view Only)

Support for specific Computer Setup options may vary depending on the hardware configuration.

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Computer Setup (F10) Utility

Computer Setup (Continued)

Heading Option Description

Power ACPI Function Enables/disables ACPI functions. Management Changing this item can make the Setup existing OS unusable.

ACPI Suspend Type •S3 (STR) (View only)

Restore On AC/Power Allows you to select system powerloss

behavior:

Loss •On

•Off

•Last State

Resume On PCI PME

Resume On PCIE PME

Wake On by Ring Disables/enables Resume on Ring.

Resume On Alarm

Date (of Month) Alarm

Time (hh:mm:ss) Alarm If Resume by Alarm is enabled, allows

HPET Mode

Disables/enables Resume by PME

Disables/enables Resume by PCIE PME

Disables/enables RTC alarm.

If resume by Alarm is enabled ,allows you to select day of the month for resumption of RTC alarm.

you to select what time the RTC alarm will resume.

High Precision Event Timers

• 32-bit Mode is for 32 bit OS

• 64-bit Mode is for 64 bit OS

Support for specific Computer Setup options may vary depending on the hardware

configuration.

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Computer Setup (F10) Utility

Computer Setup (Continued)

Heading Option Description

Hard Ware Reset Case Open Status Enabled/Disabled Monitor Setup

Case Opened (View Only)

CPU Temperature (View Only)

CPU Fan Speed (View Only)

System Temperature (View Only)

System Fan Speed (View Only)

CPU Fan Fault Detect Enabled/Disabled

System Fan Fault Detect Enabled /Disabled

Load Defaults Allows you to reset computer setup to Setting Factory Defaults

Set Supervisor Allows you to establish a password to Password control access to computer Setup

Set User Allows you to establish a password to Password control access to computer

Save Setting and Allows you to save current settings and Exit exit Computer Setup

Exit without Allows you to exit Computer setup Saving without saving changes

Support for specific Computer Setup options may vary depending on the hardware

configuration.

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Troubleshooting Guide

HP Business Desktop

dx2480

March 2008

This guide provides helpful hints and solutions for troubleshooting the above products as well as scenarios for possible hardware and software problems.

Microsoft, MS-DOS, Windows and Windows Vista are trademarks of Microsoft Corporation in the U.S. and other countries.

WARNING: Text set off in this manner indicates that failure to follow directions

could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information.

Troubleshooting Guide

HP Compaq Business Desktop dx2480 Microtower Model

First Edition (March 2008)

Computer Diagnostic Features

HP Insight Diagnostics

HP Insight Diagnostics is included on CD with some computer models only.

The HP Insight Diagnostics utility allows you to view information about the hardware configuration of the computer and perform hardware diagnostic tests on the subsystems of the computer. The utility simplifies the process of effectively identifying, diagnosing, and isolating hardware issues.

Use HP Insight Diagnostics to determine if all the devices installed on the computer are recognized by the system and functioning properly. Running tests is optional but recommended after installing or connecting a new device.

You should run tests, save the test results, and print them so that you have printed reports available before placing a call to the Customer Support Center.

Third party devices may not be detected by HP Insight Diagnostics.

Troubleshooting Guide www.hp.com/in 8-1

Accessing HP Insight Diagnostics

You must boot to the Documentation and Diagnostics CD, as described in the steps below, to access HP Insight Diagnostics.

1. While the computer is on, insert the Documentation and Diagnostics CD into an optical drive on the computer.

2. Shut down the operating system and turn off the computer.

3. Turn on the computer. The system will boot to the CD.

If the system does not boot to the CD in the optical drive, you may need to

change the boot order in the Computer Setup (F10) utility so that the system attempts to boot to the optical drive before booting to the hard drive. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for more information.

Computer Diagnostic Features

4. When prompted, press the Y key if you want to operate in Safe mode or any other key if you want to operate in Regular mode.

Regular mode is the default mode if no keys are pressed within the

specified time frame. If the screen remains blank after pressing any key other than Y, try rebooting and select safe mode when prompted.

5. Select the appropriate language and click Continue.

It is recommended that you accept the assigned default keyboard for your

language unless you want to test your specific keyboard.

6. In the End User License Agreement page, click Agree if you agree with the terms. The HP Insight Diagnostics utility launches with the Survey tab displayed.

Troubleshooting Guide www.hp.com/in 8-2

Survey Tab

The Survey tab displays important system configuration information. In the View section on the left side of the screen, you can select the Summary view to see limited configuration data or select the Advanced view to see all the data in the selected category. Regardless of whether you choose Advanced or Summary, the following categories of information are available on the Survey tab:

All-Gives a listing of all categories of information about the computer.

Overview-Gives you a listing of general information about the computer.

Architecture-Provides system BIOS and PCI device information. Asset

Control-Shows asset tag, system serial number, and processor information.

Communication-Shows information about the computer parallel (LPT) and

serial (COM) port settings, plus USB and network controller information.

Computer Diagnostic Features

Graphics-Shows information about the graphics controller of the computer.

Input Devices-Shows information about the keyboard, mouse, and other

input devices connected to the computer.

Memory-Shows information about all memory in the computer. This includes memory slots on the system board and any memory modules installed.

Miscellaneous-Shows information obtained from the computer configuration memory (CMOS), system management BIOS data, system board data, and diagnostics component information.

Storage-Shows information about storage media connected to the computer. This list includes all fixed disks, diskette drives, and optical drives.

System-Shows information about the system board, processor, chassis, and BIOS, plus internal speaker and PCI bus information.

Troubleshooting Guide www.hp.com/in 8-3

Test Tab

Computer Diagnostic Features

The Test tab allows you to choose various parts of the system to test. You can also choose the type of test and testing mode.

There are two test modes to choose from:

n Interactive Mode-Provides maximum control over the testing

process. The diagnostic software will prompt you for input during tests that require your interaction.You may also determine whether the test passed or failed.

n Unattended Mode-Does not display prompts and requires no

interaction. If errors are found, they are displayed when testing is complete.

There are three types of tests to choose from:

n Quick Test-Provides a predetermined script where a sample of each

hardware component is exercised and requires no user intervention in either Unattended or Interactive mode.

n Complete Test-Provides a predetermined script where each

hardware component is fully tested. There are more tests available in the Interactive mode, but these require user intervention.

n Custom Test-Provides the most flexibility in controlling the testing

of a system. The Custom Test mode allows you to specifically select which devices, tests, and test parameters are run.

To begin testing:

1. Select the Test tab.

2. On the left side of the tab, select the Type of Test to perform

(Quick, Complete, or Custom).

3. On the left side of the tab, select the Test Mode (Interactive or

Unattended).

4. Select the device to be tested from the drop-down list.

Troubleshooting Guide www.hp.com/in 8-4

Status Tab

Computer Diagnostic Features

5. Choose how you want the test to be executed, either Number of

Loops or Total Test Time. When choosing to run the test over a specified number of loops, enter the number of loops to perform. If you desire to have the diagnostic test for a specified time period, enter the amount of time in minutes.

6. Click Begin Testing to start the test. The Status tab, which allows

you to monitor the progress of the test, is automatically displayed during the testing process. When the test is complete, the Status tab shows whether the device passed or failed.

7. If errors are found, go to the Log tab and click the Error Log to

display more detailed information and recommended actions.

The Status tab displays the status of the selected tests. The type of test executed (Quick, Complete, or Custom) is also displayed. The main progress bar displays the percent complete of the current set of tests. While testing is in progress, a Cancel Testing button is displayed for use if you want to cancel the test.

After testing has completed, the Cancel Testing button is replaced with a Retest button. The Retest button will retest the last set of tests executed. This enables you to re-run the set of tests without having to re-enter the data in the Test tab.

The Status tab also shows:

n The devices being tested n The tests that are running n The overall elapsed time n The individual elapsed test times n The condition status of each test

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Log Tab

Computer Diagnostic Features

The Log tab contains two logs, a Test Log and an Error Log, each of which can be selected from the left side of the tab.

The Test Log displays all tests that have been executed, the number of times of execution, the number of times the test failed, and the time it took to complete the test. The Clear Test Log button will clear the contents of the Test Log.

The Error Log displays the tests for devices that have failed during the diagnostic testing and includes the following columns of information. ¦

n The Description section describes the error that the diagnostic test

found.

n The Recommended Repair will give a recommended action that

should be performed to resolve the failed hardware.

n The Failed Count is the number of times the test has failed.

n The Error Code provides a numerical code for the failure. The error

codes are defined in the Help tab.

n The Clear Error Log button will clear the contents of the Error

Log.

Saving and Printing Information in HP Insight Diagnostics

You can save the information displayed in the HP Insight Diagnostics Status and Log tabs to a diskette or a USB 2.0 HP Drive Key (64MB or higher). You can not save to the hard drive. The system will automatically create an html file that has the same appearance as the information displayed on the screen.

1. Insert a diskette or USB 2.0 HP Drive Key (capacity must be 64MB

or higher). USB 1.0 Drive Keys are not supported.

2. Click Save in the upper right corner of the tab.

3. Select Save to the floppy or Save to USB key.

4. Enter a file name in the File Name box and click the Save button. An

html file will be saved to the inserted diskette or USB HP Drive Key.

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Computer Diagnostic Features

5. Print the information from the storage device used to save it.

To exit HP Insight Diagnostics, click Exit in the upper right corner of the

screen then remove the Documentation and Diagnostics CD from the optical drive.

Downloading the Latest Version of HP Insight Diagnostics

1. Go to www.hp.com.

2. Click the Software & Driver Downloads link.

3. Click the Download drivers and software radio button.

4. Enter your product number (for example, dx7380) in the text box

and press the Enter key.

5. Select your specific computer model

6. Select your OS.

7. Click the Diagnostic link.

8. Locate HP Insight Diagnostics and click Download.

The download includes instructions on how to create the

bootable CD.

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Troubleshooting

Safety and Comfort

WARNING: Misuse of the computer or failure to establish a safe and

comfortable work environment may result in discomfort or serious injury. Refer to the Safety & Comfort Guide on the Documentation and Diagnostics CD and available at www.hp.com/ergo for more information on choosing a workspace and creating a safe and comfortable work environment.

Before You Call for Technical Support

If you are having problems with the computer, try the appropriate solutions below to try to isolate the exact problem before calling for technical support.

n Run the diagnostics utility. Refer to Chapter 1, "Computer Diagnostic

Features" for more information.

n Check the Power LED on the front of the computer to see if it is

flashing. The flashing lights are error codes that will help you diagnose the problem. Refer to "Interpreting Diagnostic Lights and Audible Codes" to interpret the codes.

n If the screen is blank, plug the monitor into a different video port on

the computer if one is available. Or, change out the monitor with a monitor that you know is functioning properly.

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Troubleshooting

n If you are working on a network, plug another computer with a

different cable into the network connection. There may be a problem with the network plug or cable.

n If you recently added new hardware, remove the hardware and see if

the computer functions properly.

n If you recently installed new software, uninstall the software and see

if the computer functions properly.

n Boot the computer to the Safe Mode to see if it will boot without all

of the drivers loaded. When booting the operating system, use "Last Known Configuration."

n Refer to the comprehensive online technical support at

www.hp.com/support.

n Refer to "Helpful Hints" in this guide for more general suggestions.

n Run the Restore Plus! DVD to restore the original operating system

and factory-installed software.

CAUTION: Running the Restore Plus! DVD will erase all data on the hard drive.

To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self-solve diagnostics. If you need to contact HP support, use HP Instant Support Professional Edition's online chat feature. Access HP Instant Support Professional Edition at:

www.hp.com/go/ispe.

Access the Business Support Center (BSC) at www.hp.com/go/bizsupport for the latest online support information, software and drivers, proactive notification, and worldwide community of peers and HP experts.

If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that your service call is handled properly:

n Be in front of your computer when you call.

n Write down the computer serial number and product ID number, and

the monitor serial number before calling.

n Spend time troubleshooting the problem with the service technician.

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n Remove any hardware that was recently added to your system. ¦

Remove any software that was recently installed.

n Run the Restore Plus! DVD.

CAUTION: Running the Restore Plus! DVD will erase all data on the hard. drive

For sales information and warranty upgrades (HP Care Pack Services),

call your local authorized service provider or dealer.

Helpful Hints

If you encounter problems with the computer, monitor, or software, see the following list of general suggestions before taking further action:

n Check that the computer and monitor are plugged into a working

electrical outlet.

n Check to see that the computer is turned on and the green power light

is on.

Troubleshooting

n Check to see that the monitor is turned on and the green monitor light

is on.

n Turn up the brightness and contrast controls of the monitor if the

monitor is dim.

n Press and hold any key. If the system beeps, the keyboard should be

operating correctly.

n Check all cable connections for loose connections or incorrect

connections.

n Wake the computer by pressing any key on the keyboard or pressing

the power button. If the system remains in standby mode, shut down the computer by pressing and holding the power button for at least four seconds then press the power button again to restart the computer. If the system will not shut down, unplug the power cord, wait a few seconds, then plug it in again. The computer will restart if automatic start on power loss is set in Computer Setup. If it does not restart, press the power button to start the computer.

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Troubleshooting

n Reconfigure the computer after installing a nonplug and play

expansion board or other option. See "Solving Hardware Installation Problems" for instructions.

n Be sure that all the needed device drivers have been installed. For

example, if you are using a printer, you need a driver for that model printer. ¦ Remove all bootable media (diskette, CD, or USB device) from the system before turning it on.

n If you have installed an operating system other than the factory-

installed operating system, check to be sure that it is supported on the system.

n If the system has multiple video sources* installed and a single

monitor, the monitor must be plugged into the monitor connector on the source selected as the primary VGA adapter. During boot, the other monitor connectors are disabled and if the monitor is connected into these ports, the monitor will not function.

CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

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Solving General Problems

You may be able to easily resolve the minor problems described in this section. If a problem persists and you are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact your HP authorized reseller or service provider.

Troubleshooting

Problem

Computer will not turn on.

Cause

Cables to the external power source are unplugged.

Voltage selector switch* on the rear of the computer chassis is not switched to the correct voltage (115V or 230V).

A defective PCI card has been installed.

Drive data or power supply cables may not be properly connected.

The unit temperature was exceeded. The fan may be blocked.

Solution

Ensure that cables connecting the computer to the external power source are plugged in properly and the wall outlet is active.

Select the proper AC voltage using the slide switch.

Remove any expansion board that was just installed.

Reseat drive data and power supply cables.

1. Unit is in an exceedingly hot environment. Let it cool down.

2. Ensure that computer air vents are not blocked and the internal fan is running.

3. Contact an HP authorized reseller or service provider.

1. Press and hold the power

Computer appears locked up and will not turn off when the power button is pressed.

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Software control of the power switch is not functional.

button for at least four seconds until the computer turns off.

2. Disconnect the power cord from the electrical outlet.

Troubleshooting

Problem

Computer will not respond to USB keyboard or mouse.

USB Keyboard does not respond/work

CAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.

Computer date and time display is incorrect.

Computer is in standby mode.

Keyboard or mouse is not connected to computer.

System has locked up.

System USB Keyboard support is not enabled in the F10 BIOS setup.

RTC (real-time clock) battery may need to be replaced. .

Cause

MConnecting the

computer to a live AC outlet prolongs the life of the RTC battery.

Solution

Press the power button to resume from standby mode.

Connect keyboard and mouse cables to computer.

Restart the computer.

Restart the computer and press F10 to enter BIOS setup. Enter into Integrated peripherals and enable the USB keyboard support.

First, reset the Date and Time Properties in the Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Hardware Reference Guide on the Documentation and Diagnostics CD for instructions on installing a new battery.

Cursor will not move using the arrow keys on the keypad.

Poor performance is experienced.

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on.

The Num Lock key may be

Processor is hot.

Press the Num Lock key. The Num Lock light should not be on if you want to use the arrow keys. The Num Lock key can be disabled (or enabled) in Computer Setup.

1. Ensure airflow to the computer is not blocked. Leave a 4-inch (10.2-cm) clearance on all vented sides of the computer and monitor to permit required airflow.

2. Ensure fans are connected and working properly (some fans only operate when needed).

3. Ensure the processor heatsink is installed properly.

Troubleshooting

Problem

Poor performance is experienced (continued).

Cause

Hard drive is full.

Low on memory.

Hard drive is fragmented.

Program previously accessed did not release reserved memory back to the system.

Virus resident on the hard drive.

Too many applications running.

Some software applications, especially games, are stressful on the graphics subsystem.

Solution

Transfer data from the hard drive to create more space on the hard drive.

Add more memory.

Defragment hard drive.

Restart the computer.

Run the virus protection program.

1. Close unnecessary applications to free up memory. 2. Add more memory.

1. Lower the display resolution for the current application or consult the documentation that came with the application for suggestions on how to improve performance by adjusting parameters in the application.

2. Add more memory.

3. Upgrade the graphics solution.

Restart the computer.

Turn on the monitor and check that the monitor light is on.

Blank screen (no video).

Cause unknown.

Monitor is not turned on and the monitor light is not on.

The cable connections are not correct.

Check the cable connection from the monitor to the computer and to the electrical outlet.

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Troubleshooting

Problem

Blank screen (no video) (continued).

CAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.

Power LED is flashing and computer will not start.

You may have a screen blanking utility installed or energy saver features are enabled.

Computer is in standby mode.

You are using a fixed-sync monitor and it will not sync at the resolution chosen.

The VGA/BNC selector switch on the monitor (some models) is not properly set.

Bad monitor.

Initernal error has occurred and the computer is flashing a code.

Cause

Solution

Press any key or click the mouse button and, if set, type your password.

Press the power button to resume from standby mode.

Be sure that the monitor can accept the same horizontal scan rate as the resolution chosen.

Set the selector switch to agree with the cable connection.

Try a different monitor.

Refer to "Interpreting Diagnostic Lights and Audible Codes" to interpret the error code.

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Solving Hardware Installation Problems

You may need to reconfigure the computer when you add or remove hardware, such as an additional drive or expansion card. If you install a plug and play device, Windows XP Home/Professional/Vista will automatically recognize the device and configure the computer. If you install a nonplug and play device, you must reconfigure the computer after completing installation of the new hardware. In Windows XP Home/Professional/Vista, use the Add Hardware Wizard and follow the instructions that appear on the screen.

Troubleshooting

Problem

A new device is not recognized as part of the system.

Cause

Device is not seated or connected properly.

Cable(s) of new external device are loose or power cables are unplugged.

Power switch of new external device is not turned on.

When the system advised you of changes to the configuration, you did not accept them.

A plug and play board may not automatically configure when added if the default configuration conflicts with other devices.

Solution

Ensure that the device is properly and securely connected and that pins in the connector are not bent down.

Ensure that all cables are properly and securely connected and that pins in the cable or connector are not bent down.

Turn off the computer, turn on the external device, then turn on the computer to integrate the device with the computer system.

Reboot the computer and follow the instructions for accepting the changes.

Use Windows XP Device Manager to deselect the automatic settings for the board and choose a basic configuration that does not cause a resource conflict. You can also use Computer Setup to reconfigure disable devices to resolve the resource conflict

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Troubleshooting

Problem

Computer will not start.

Cause

Wrong memory modules were used in the upgrade or memory modules were installed in the wrong location.

1. Review the documentation

2. Observe the beeps and LED

3. If you still cannot resolve the

Solution

that came with the system to determine if you are using the correct memory modules and to verify the proper installation.

lights on the front of the computer. See "Interpreting Diagnostic Lights and Audible Codes" to determine possible causes.

issue, contact Customer Support.

Interpreting Diagnostic Lights and Audible Codes

This section covers the front panel LED codes as well as the audible codes

that may occur before or during POST that do not necessarily have an error code or text message associated with them.

If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on

the front panel of the computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in

which they should be performed.

Replace the system board or power supply only as the last resort.

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Troubleshooting

Diagnostic Front Panel LEDs and Audible Codes

Activity

Blue Power LED On.

Blue Power LED flashes every two seconds.

CPU Fan weak (RPM <

1000) or not turning, Display Warning message and Long Beep for 5 sec and shut down.

Beeps

None

Possible Cause

Computer on.

Computer in Suspend to RAM mode (some models only) or normal Suspend mode.

Processor thermal protection activated: A fan may be blocked or not turning. OR The heatsink/fan assembly is not properly attached to the processor.

Recommended Action

None

Press any key or move the mouse to wake the computer.

1. Ensure that the computer air vents are not blocked and the processor cooling fan is running.

2. Open hood, press power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. Ensure the fan is fully/properly seated or installed.

3. If fan is plugged in and seated properly, but is not spinning, then replace processor fan.

4. Reseat processor heatsink and verify that the fan assembly is properly attached.

5. Contact an authorized reseller or service provider.

System Fan not turning, Display Warning message and Long Beep for 5 sec and shut down

Blue Power LED flashes five times, one every second, followed by a 2 second pause. Also 5 simultaneous beeps will be heard.

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Thermal protection activated: System fan may be blocked or not turning. OR The system fan is not properly connected to the system board.

Pre-video memory error.

1. Open hood, press power button, and see if the system fan spins. If the system fan is not spinning, make sure the fan's cable is plugged onto the system board header.

2. Ensure that no foreign objects are stuck in the System Fan.

3.If still it does not spins, replace the the System fan or contact an authorized reseller or service provider

1. Reseat DIMMs. Power on

the system.

2. Replace DIMMs one at a time to isolate the faulty module.

3. Replace third-party memory with HP memory.

4. Replace the system board.

Troubleshooting

Diagnostic Front Panel LEDs and Audible Codes (Continued)

Activity

System does not power on and LEDs are not flashing.

None

Beeps

Possible Cause

System unable to power on.

Recommended Action

Press and hold the power button for

less than 4 seconds. If the hard drive LED turns green, then:

1. Check that the voltage selector, located on the rear of the power supply, is set to the appropriate voltage. Proper voltage setting depends on your region.

2. Remove the expansion cards one

at a time until the 5V_aux light on the

system board turns on.

3. Replace the systemboard.

OR Press and hold the power button for

less than 4 seconds. If the hard drive LED does not turn green then:

1. Check that the unit is plugged into a working AC outlet.

2. Open hood and check that the power button harness is properly connected to the system board.

3. Check that both power supply cables are properly connected to the system board.

4. Check to see if the 5V_aux light on the system board is turned on. If it is turned on, then replace the power button harness.

5. If the 5V_aux light on the system board is not turned on, then replace the power supply.

6. Replace the system board.

System gives an error message stating that “Error 912 - computer cover or side panel has been removed. Make sure that any system access was authorized and press F1 to continue”.

* Applicable for non China version.

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Continuous beep for 5 seconds

The chassis side cover is open or would have been removed after previous power on.

1. Make sure that the Chassis side cover is closed if not fix it as directed in the assembling guide.

2. Ensure that any system access was authorized, check all the hardware ensuring that no hardware has been changed or removed. Then enter the BIOS setup by pressing F10 then select Hardware Monitor setup and enable the Reset Case Open Status.

3. Refer to the F10 Utility Guide for its functionality and any further issues.

4. For maximum security, be sure to establish a setup password. The setup password prevents unauthorized access to the Computer Setup utility.

Restoring the Software

The Windows operating system and software can be restored to the original state that they were when you purchased the computer by using the Restore Plus! DVD. See the documentation included with the Restore Plus! DVD for complete instructions on using this feature.

In the event that you lose power during the initial operating system installation process, use the Restore Plus! DVD to install the operating

system.

Contacting Customer Support

For help and service, contact an authorized reseller or dealer. To locate a reseller or dealer near you, visit www.hp.com.

If you take the computer to an authorized reseller, dealer, or service

provider for service, remember to provide the setup and power-on passwords if they are set.

Troubleshooting

Refer to the number listed in the warranty booklet for technical assistance.

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HP Compaq dx2480 Reference Guide

Specifications and Main Features

Frequently Asked Questions

User Manual