HP dx2700 manual Solving General Problems, Problem Cause Solution, Standby mode

Page 82

Troubleshooting Without Diagnostics

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.

Problem

Cause

Solution

 

 

 

Computer will not

Cables to the external

Ensure that cables connecting the

turn on.

power source are

computer to the external power source

 

unplugged.

are plugged in properly and the wall

 

 

outlet is active.

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

Select the proper AC voltage using the slide switch.

 

A defective PCI card has

Remove any expansion board that

 

been installed.

was just installed.

 

 

 

 

Drive data or power supply

Reseat drive data and power supply

 

cables may not be

cables.

 

properly connected.

 

 

 

 

 

The unit temperature was

1. Unit is in an exceedingly hot

 

exceeded. The fan may be

environment. Let it cool down.

 

blocked.

2. Ensure that computer air vents are

 

 

 

 

not blocked and the internal fan is

 

 

running.

 

 

3. Contact an HP authorized reseller

 

 

or service provider.

 

 

 

Computer appears

Software control of the

1. Press and hold the power button

locked up and will not

power switch is not

for at least four seconds until the

turn off when the power

functional.

computer turns off.

button is pressed.

 

2. Disconnect the power cord from

 

 

 

 

the electrical outlet.

 

 

 

Computer will not

Computer is in

Press the power button to resume from

respond to USB

standby mode.

standby mode.

keyboard or mouse.

 

 

Keyboard or mouse is not

Connect keyboard and mouse cables

 

 

connected to computer.

to computer.

 

 

 

 

System has locked up.

Restart the computer.

ÄCAUTION: 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.

*Applicable for non China version.

 

D–2

431672-001

Service Reference Guide

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Contents
Service reference guide Service Reference Guide SeptemberService Reference Guide Contents Contents Front I/O Panel Housing Assembly MT chassis Installing the Operating System Microsoft Windows XP/Redflag LinuxHP Software Converting to Ntfs Associated with WinXP OSWindows XP Home and XP Professional Setup Utilities and Diagnostics Features Power-On Self-Test PostComputer Setup Utilities Using Computer Setup F10 UtilitiesSetup Utilities and Diagnostics Features Computer Setup Computer Setup MenuHeading Option Description Features Sata Port For each, allows you to Heading OptionDescriptionCD-ROM Allows you to set Dvmt Mode to Parallel port Allows you to select a setting for the onboard S1 POS PnP/PCI IRQ Resources Configurations Backing up the Cmos Recovering the Configuration SettingsRestoring the Cmos Desktop Management Initial Configuration and DeploymentFailSafe Boot Block ROM ROM FlashDual-State Power Button Power ManagementEstablishing a User Password Using Computer Setup Password SecurityEstablishing a Supervisor Password Using Computer Setup SecurityEntering a User Password Current password/new password/new password Delimiter character as shown current passwordSurge-Tolerant Power Supply National Keyboard Delimiter CharactersSerial ATA Hard Drive Characteristics Serial ATA Drive Guidelines and FeaturesSata 1.5 and 3.0 Hard Drives Sata Data Cable Sata Power CableSata Hard Drive Cables Pin Number Usage Device Plug Host PlugDrive Capacities Sata Smart DrivesWindows 2000, XP, and Linux Legacy Mode Native ModeChassis Designations Microtower MT/Small Form Factor SFFDx2708 MT Dx2700SFF Preventing Electrostatic Damage to Equipment Electrostatic Discharge InformationGenerating Static Relative Humidity Event 55% 40% 10%Recommended Materials and Equipment Personal Grounding Methods and EquipmentGrounding the Work Area Static Shielding Protection Levels Method VoltageCleaning the Computer Case General Cleaning Safety PrecautionsRoutine Care Cleaning the Monitor Cleaning the KeyboardCleaning the Mouse Tools and Software Requirements Service ConsiderationsScrews Lithium Coin Cell Battery Cables and ConnectorsHard Drives Preparation for Disassembly Access Panel MT Chassis Front Bezel MT Chassis Removing the Computer Access Panel Removing the Front Bezel Installing the Tower Stand Front Drive Bezels Removing a 5.25 Drive Bezel Blank/MT ChassisInstalling Memory Modules/MT chassis MemoryInstalling DDR2-SDRAM DIMMs SFF chassis Rotating the Easy Access Drive BayInstalling a Dimm Expansion Slot Cover Lock Expansion Cards2 PCI/PCIe Expansion Card 431672-001 Installing an Expansion Card Removing the Expansion Slot CoverInstalling an Expansion Card Removing an Expansion Card Cable Management Drives Locating Drive PositionsDrive Positions Removing a DriveItem Description Locating Drive Positions SFF chassis Desktop Drive PositionsRemoving an Optical Drive or Diskette Drive SFF chassis Installing an Optional Optical Drive SFF chassis Installing Guide Screws in the Optical Drive Connecting the Flat Ribbon Cable and Audio Cable Upgrading the Hard Drive SFF chassis Removing and Replacing the Hard DriveRemove the screw Slide the drive to the right of the bay Front I/O Panel Housing Assembly MT chassis System Fan Heatsink MT chassis Processor 431672-001 System Board Battery Battery Holder Power Supply Enhanced Keyboard Connector Pin AssignmentsConnector and Icon Pin Signal MouseParallel Interface Serial Interface, Powered and Non-PoweredConnector and Icon 1/8 miniphone Pin Signal MicrophoneLine-Out Audio HeadphoneLine-In Audio MonitorPin Power for CPU Pin PowerConnector Pin Signal Power Cord Set Requirements General RequirementsPost Error Messages Post Error MessagesScreen Message Probable Cause Recommended Action Post Error Messages Ensure the system board Bios supports the processor Default Settings Save and ExitPost Error Messages Troubleshooting Without Diagnostics Preliminary ChecklistProblem Cause Solution Solving General ProblemsStandby mode Num Lock key Problem Cause Solution Solving Hardware Installation Problems Interpreting Diagnostic Lights and Audible Codes Solving Display Problems Solving Display ProblemsSelect Enable VGA Mode Set properly Accessories System Tools Click Start All ProgramsSolving Audio Problems Solving Audio ProblemsSolving Audio Problems Where printer port is Solving Printer ProblemsSolving Printer Problems DIR C\ printer portSolving Keyboard and Mouse Problems Solving Keyboard ProblemsSolving Network Problems Solving Network ProblemsRestore Plus! CD Solving Memory Problems Solving Memory ProblemsSolving Processor Problems Solving Processor ProblemsSolving CD-ROM and DVD Problems Solving CD-ROM and DVD ProblemsSolving DiskOnKey Problems Solving Drive Key ProblemsSolving Internet Access Problems Solving Internet Access ProblemsOptions Select Start ControlPanel Delete Cookies buttonClick the Device Manager PropertiesDiagnostic Front Panel LEDs and Audible Codes Diagnostic Front Panel LEDs and Audible CodesActivity Beeps Possible Cause Recommended Action Diagnostic Front Panel LEDs and Audible Codes Diagnostic Front Panel LEDs and Audible Codes Restoring the Software Contacting Customer Support Memory
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