HP dx2480 manual Solving General Problems, Problem Cause Solution

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Troubleshooting

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 turn on.

Cables to the external power source are unplugged.

Ensure that cables connecting the computer to the external power source 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 been

Remove any expansion board

installed.

that was just installed.

 

 

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

Reseat drive data and power supply cables.

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

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.

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

Software control of the power switch is not functional.

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

2.Disconnect the power cord from the electrical outlet.

Troubleshooting Guide

www.hp.com/in

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Contents Hardware Reference Manual Hardware Reference Guide Hardware Reference Guide Contents Security Lock Provisions Standard Configuration Features Product FeaturesFront Panel Components Front Panel ComponentsRear Panel Components Rear Panel ComponentsKeyboard Components KeyboardSpecial Mouse Functions Windows Logo KeySerial Number Location Serviceability Features Hardware UpgradesRemoving the Computer Access Panel Removing the Front Bezel DIMMs Installing Additional MemoryDDR2-SDRAM DIMMs Populating Dimm Sockets Installing DIMMs Installing a Dimm Removing a 5.25 Drive Bezel Blank Replacing or Upgrading a Drive Drive Positions Locating Drive PositionsRemoving a Drive Hard disk is inserted or slide out from the back Replacing a Drive Sliding the Drives into the Drive Cage Sliding the Hard Drive into the Drive Cage Install Second Hard Disk Hardware Upgrades Hardware Upgrades Removing or Installing an Expansion Card Releasing the Slot Cover Lock Removing an Expansion Slot Cover Removing an Expansion Card Replacing or Adding an Expansion Card Securing the Expansion Cards and Slot Covers Reassembling the Computer Turn on the computer by pressing the power button Battery Replacement Hardware Reference Guide Power Supply Notice Power Supply Label Chassis Intrusion Switch Installing a Security LockMechanical Lock Grounding Methods Preventing Electrostatic DamageHardware Reference Guide Computer Operating Guidelines and Routine Care Cleaning Optical Drive PrecautionsSafety OperationShipping Preparation Computer Setup F10 Utility Guide Computer Setup F10 Utility Guide Contents Contents Computer Setup F10 Utilities Computer Setup F10 UtilityUsing Computer Setup F10 Utilities Computer Setup F10 Utility Heading Option Description Computer SetupCHS 1MB 3BC/IRQ7 Computer Setup Heading Option Description Troubleshooting Guide Troubleshooting Guide HP Insight Diagnostics Computer Diagnostic FeaturesAccessing HP Insight Diagnostics Survey Tab Unattended Test TabStatus Tab Log Tab Saving and Printing Information in HP Insight DiagnosticsDownloading the Latest Version of HP Insight Diagnostics Safety and Comfort Before You Call for Technical Support TroubleshootingTroubleshooting Helpful Hints Run the Restore Plus! DVDTroubleshooting Problem Cause Solution Solving General ProblemsTo permit required airflow Cable connections are Problem Cause Solution Solving Hardware Installation Problems Problem Cause Interpreting Diagnostic Lights and Audible CodesDiagnostic Front Panel LEDs and Audible Codes Diagnostic Front Panel LEDs and Audible Codes Contacting Customer Support Restoring the Software