HP dx7300 manual 1Solving General Problems

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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 an authorized dealer or reseller.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. 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.

Look for the LED between the DIMM sockets. If the LED is illuminated, the system still has power. Power off the computer and remove the power cord before proceeding.

Table 2-1Solving General Problems

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

Cause

Solution

 

 

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.

Computer will not respond to USB keyboard or mouse.

Cause

Solution

 

 

 

 

Computer is in standby mode.

To resume from standby mode, press the power button or

 

press any key.

 

 

 

 

 

 

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.

 

 

 

 

 

 

System has locked up.

Restart computer.

 

 

 

 

Computer date and time display is incorrect.

Cause

Solution

 

 

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

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

First, reset the date and time under 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, or contact an authorized dealer or reseller for RTC battery replacement.

10 Chapter 2 Troubleshooting Without Diagnostics

ENWW

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Contents Troubleshooting Guide Troubleshooting Guide Iii Iv About This Book Table of contents Appendix B Password Security and Resetting Cmos Accessing DPS Through Computer SetupHP Insight Diagnostics HP Insight DiagnosticsSurvey Tab Test Tab Log Tab Select a language and click Download Protecting the SoftwareProtecting the Software HP Backup and Recovery Manager Safety and Comfort Before You Call for Technical Support Safety and ComfortHelpful Hints Helpful Hints 1Solving General Problems Solving General ProblemsComputer date and time display is incorrect Cause Solution Solving General Problems There is no sound or sound volume is too low Cause SolutionCannot remove computer cover or access panel Cause Solution Poor performance is experienced Cause SolutionRun Windows XP or Start Accessories Run Cause SolutionHard drive LED does not turn on green then 2Solving Power Problems Solving Power ProblemsPower supply shuts down intermittently Cause Solution Solving Diskette Problems Solving Diskette Problems3Solving Diskette Problems Cannot format diskette Cause Solution Problem has occurred with a disk transaction Cause SolutionDiskette drive cannot read a diskette Cause Solution Invalid system disk message is displayed Cause SolutionStorage Boot Order BootSecurity Password Options Storage Storage Options Removable MediaSolving Hard Drive Problems 4Solving Hard Drive ProblemsHard drive error occurs Cause Solution Disk transaction problem Cause SolutionSolving Hard Drive Problems Nonsystem disk/NTLDR missing message Cause SolutionComputer will not boot from hard drive Cause Solution Computer seems to be locked up Cause SolutionAgain Solving Media Card Reader Problems Solving Media Card Reader Problems5Solving Media Card Reader Problems Can not write to the media card Cause SolutionEnww Solving Display Problems Solving Display Problems6Solving Display Problems Blank screen no video Cause SolutionDim characters Cause Solution Image is not centered Cause Solution Out of Range displays on screen Cause SolutionCertain typed symbols do not appear correct Cause Solution Solving Audio Problems Solving Audio Problems7Solving Audio Problems Sound cuts in and out Cause SolutionSound from headphones is not clear or muffled Cause Solution Solving Printer Problems Solving Printer Problems8Solving Printer Problems 9Solving Keyboard Problems Solving Keyboard and Mouse ProblemsSelect Shut Down Solving Keyboard and Mouse Problems 10Solving Mouse Problems11Solving Hardware Installation Problems Solving Hardware Installation ProblemsComputer will not start Cause Solution Solving Hardware Installation Problems Goes awayOnce bad card is identified, remove and replace bad Option card12Solving Network Problems Solving Network ProblemsWake-on-LAN feature is not functioning Cause Solution Network status link light never flashes Cause Solution Solving Network ProblemsDiagnostics reports a failure Cause Solution New network card will not boot Cause Solution Solving Memory Problems Solving Memory Problems13Solving Memory Problems Out of memory error Cause SolutionInsufficient memory error during operation Cause Solution Solving Processor Problems Solving Processor Problems14Solving Processor Problems Some fans only operate when needed15Solving CD-ROM and DVD Problems Solving CD-ROM and DVD ProblemsMode in Security Password Options Movie will not play in the DVD drive Cause Solution Solving CD-ROM and DVD ProblemsCannot eject compact disc tray-load unit Cause Solution Enww Solving Drive Key Problems Solving Drive Key Problems16Solving Drive Key Problems USB Drive Key not found identified Cause SolutionSolving Front Panel Component Problems 17Solving Front Panel Component ProblemsSolving Internet Access Problems Solving Internet Access Problems18Solving Internet Access Problems Unable to connect to the Internet Cause SolutionDouble-clickAgere Systems PCI-SV92PP Soft Click on System and MaintenanceModem Solving Software Problems Solving Software Problems19Solving Software Problems Contacting Customer Support Post Error Messages Appendix a Post Error Messages Post Numeric Codes and Text MessagesTable A-1Numeric Codes and Text Messages Control panel message Description Recommended actionOn the Documentation and Diagnostics CD Post Numeric Codes and Text MessagesAdvanced Onboard Devices Control panel message Description Under Storage DPS Self-test SataEnww Keyboard failure while Network Server Mode Table A-2Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Check that both power supply cables are Cmos Resetting the Password Jumper Clearing and Resetting the Cmos Using Computer Setup to Reset CmosLocate, press, and hold the Cmos button in for five seconds Figure B-1 Cmos buttonDrive Protection System DPS Accessing DPS Through Computer Setup Select Storage DPS Self-TestIndex
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