Compaq 177620-006, Compaq Evo Desktop manual Solving General Problems, Problem Cause Solution

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Troubleshooting Without Diagnostics

Solving General Problems

You may be able to easily resolve the general 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 Compaq authorized dealer or reseller.

Solving General Problems

Problem

Cause

Solution

Computer won’t

Computer is not

turn on.

connected to an external

 

power source.

Connect to an external power source.

Cables to the external

Ensure that cables connecting the

power source are

computer to the external power

unplugged.

source are plugged in properly and

 

the wall outlet is active.

 

 

A defective PCI card has

Remove any expansion board that

been installed.

was just installed.

 

 

Drive power, data, or

Reseat drive power, data, and power

power supply cables

supply cables.

may not be properly

 

connected.

 

Power line selector switch on rear of computer chassis not switched to correct line voltage (115V or 230V) (some models).

Select the proper AC voltage using the slide switch.

Computer appears

Software control of the

locked up and won’t

power switch is not

turn off when the

functional.

power button is

 

pressed.

 

Press and hold the power button for at least 4 seconds until the computer turns off.

Troubleshooting Guide

2–3

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Contents Troubleshooting Guide Troubleshooting Guide Sixth Edition May Document Part Number Contents Installing Scsi Drivers for Windows NT Installation Index Compaq Diagnostics for Windows Computer Diagnostic FeaturesMenu Bar-File, Categories, Navigation, Level, Tab, Help Tabs-Overview, Test, Status, Log, Error Installing Compaq Diagnostics for WindowsUsing Categories in Compaq Diagnostics for Windows Running Diagnostic Tests in Compaq Diagnostics for Windows Computer Diagnostic Features Running Configuration Record Utility Compaq Configuration Record UtilityWindow File Compaq Remote Diagnostics Enabling AgentStarting the Remote Diagnostics Enabling Agent Restoring Your Software Protecting Your SoftwareTroubleshooting Without Diagnostics Helpful Hints Problem Cause Solution Solving General ProblemsSolving General Problems See the Hardware Reference Guide Control Panel Computer SetupNum Lock key Solving Power Supply Problems Solving Power Supply ProblemsSolving Power Supply Problems Solving Diskette Problems Solving Diskette ProblemsUse Computer Setup to check Under Error-checking, click Accessories System ToolsClick Start Programs ScanDiskStorage Storage Options OrderPower-On Solving Hard Drive ProblemsSolving Hard Drive Problems Options Power-On OptionsControllers in Storage Storage Storage Boot Order list Solving Display Problems Solving Display ProblemsSolving Display Problems Solving Display Problems Solving Audio Problems Solving Audio ProblemsFrom the Control Panel Audio Devices, then clickSolving Audio Problems Troubleshooting Without Diagnostics Solving Printer Problems Solving Printer ProblemsSolving Keyboard Problems Solving Keyboard and Mouse ProblemsClick Shut Down or Turn Off Computer. The Turn OffTo select Shut Down or Turn Solving Mouse ProblemsSolving Hardware Installation Problems Solving Hardware Installation ProblemsSolving Hardware Installation Problems Solving Network Problems Solving Network ProblemsUnder the Computer Setup Use the Computer Setup to disable the embedded NIC Using the Compaq Restore CDSolving Processor Problems Solving Processor ProblemsSolving Memory Problems Solving Memory ProblemsSolving Memory Problems Solving Scsi Problems Solving Scsi ProblemsStorage Boot Order, and enable Storage Controller Order,Solving CD-ROM and DVD Problems Solving CD-ROM and DVD ProblemsSolving CD-ROM and DVD Problems Solving Software Problems Solving Software ProblemsContacting Compaq Customer Support Code/Message Beeps Probable Cause Recommended Action Post Numeric Codes and Text MessagesNumeric Codes and Text Messages Reference Guide for Control Panel. If the problemHardware Reference Guide for Control Panel ComputerNumeric Codes and Text Messages Hardware Reference Guide Numeric Codes and Text Messages Numeric Codes and Text Messages Numeric Codes and Text Messages Numeric Codes and Text Messages Numeric Codes and Text Messages Numeric Codes and Text Messages ROM Bios Run Computer Setup Activity Beeps Probable Cause Recommended Action Diagnostic Keyboard LEDS, Front Panel LEDs and Audible CodesNum Lock LED On Diagnostic Keyboard LEDS, Front Panel LEDs and Audible Codes Second on select Password Security and Resetting Cmos Resetting the Password Jumper Using the Cmos Button Clearing and Resetting the CmosCmos button Using Computer Setup to Reset Cmos Introducing the Drive Protection System Drive Protection System DPSPanel Compaq Diagnostics Accessing DPS Through Compaq Diagnostics for WindowsSelect Storage IDE DPS Self-Test Accessing DPS Through Computer SetupMicrosoft Windows 98 and Microsoft Windows Setting up Analog/Digital Audio OutputMicrosoft Windows XP Microsoft Windows NTClick Properties Click Settings Installing Scsi Drivers for Windows NT Installation Installing Scsi Drivers for Windows NT Installation Index Index-2 Protecting