Cause Solution | HP dx7300 specification

Table 2-6Solving Display Problems (continued)

Vibrating or rattling noise coming from inside a CRT monitor when powered on.

Cause	Solution

Monitor degaussing coil has been activated.

None. It is normal for the degaussing coil to be activated when the monitor is powered on.

Clicking noise coming from inside a CRT monitor.

Cause	Solution

Electronic relays have been activated inside the monitor.

None. It is normal for some monitors to make a clicking noise when turned on and off, when going in and out of standby mode, and when changing resolutions.

High pitched noise coming from inside a flat panel monitor.

Cause	Solution

Brightness and/or contrast settings are too high.	Lower brightness and/or contrast settings.

Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to center the picture on the screen (flat panel monitors using an analog VGA input connection only).

Cause	Solution

Flat panel monitor’s internal digital conversion circuits may be unable to correctly interpret the output synchronization of the graphics card.

1.Select the monitor’s Auto-Adjustment option in the monitor’s on-screen display menu.

2.Manually synchronize the Clock and Clock Phase on- screen display functions. To download a SoftPaq that will assist you with the synchronization, go to the following Web site, select the appropriate monitor, and download either SP32347 or SP32202: http://www.hp.com/support

Graphics card is not seated properly or is bad.

1.Reseat the graphics card.

2.Replace the graphics card.

Certain typed symbols do not appear correct.

Cause	Solution

The font you are using does not support that particular symbol. Use the Character Map to locate the and select the appropriate symbol. Click Start > All Programs > Accessories > System Tools > Character Map. You can copy the symbol from the Character Map into a document.

26 Chapter 2 Troubleshooting Without Diagnostics

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HP dx7300 manual Certain typed symbols do not appear correct Cause Solution

Contents

Troubleshooting Guide Troubleshooting Guide Iii Iv About This Book Table of contents Appendix B Password Security and Resetting Cmos Accessing DPS Through Computer Setup HP Insight Diagnostics HP Insight Diagnostics Survey Tab Test Tab Log Tab Protecting the Software Protecting the SoftwareSelect a language and click Download HP Backup and Recovery Manager Safety and Comfort Before You Call for Technical Support Safety and Comfort Helpful Hints Helpful Hints Computer date and time display is incorrect Cause Solution Solving General Problems1Solving General Problems 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 Solution Run Windows XP or Start Accessories Run Cause Solution Hard drive LED does not turn on green then Power supply shuts down intermittently Cause Solution Solving Power Problems2Solving Power Problems 3Solving Diskette Problems Solving Diskette ProblemsSolving 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 Solution Storage Boot Order BootSecurity Password Options Storage Storage Options Removable Media Solving Hard Drive Problems 4Solving Hard Drive ProblemsHard drive error occurs Cause Solution Disk transaction problem Cause Solution Solving 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 Solution Again Solving Media Card Reader Problems Solving Media Card Reader Problems5Solving Media Card Reader Problems Can not write to the media card Cause Solution Enww Solving Display Problems Solving Display Problems6Solving Display Problems Blank screen no video Cause Solution Dim characters Cause Solution Image is not centered Cause Solution Out of Range displays on screen Cause Solution Certain typed symbols do not appear correct Cause Solution Solving Audio Problems Solving Audio Problems7Solving Audio Problems Sound cuts in and out Cause Solution Sound from headphones is not clear or muffled Cause Solution 8Solving Printer Problems Solving Printer ProblemsSolving Printer Problems Select Shut Down Solving Keyboard and Mouse Problems9Solving Keyboard Problems Solving Keyboard and Mouse Problems 10Solving Mouse Problems Computer will not start Cause Solution Solving Hardware Installation Problems11Solving Hardware Installation Problems Solving Hardware Installation Problems Goes awayOnce bad card is identified, remove and replace bad Option card Wake-on-LAN feature is not functioning Cause Solution Solving Network Problems12Solving Network Problems Diagnostics reports a failure Cause Solution Solving Network ProblemsNetwork status link light never flashes Cause Solution New network card will not boot Cause Solution Solving Memory Problems Solving Memory Problems13Solving Memory Problems Out of memory error Cause Solution Insufficient memory error during operation Cause Solution Solving Processor Problems Solving Processor Problems14Solving Processor Problems Some fans only operate when needed Mode in Security Password Options Solving CD-ROM and DVD Problems15Solving CD-ROM and DVD Problems Cannot eject compact disc tray-load unit Cause Solution Solving CD-ROM and DVD ProblemsMovie will not play in the DVD drive Cause Solution Enww Solving Drive Key Problems Solving Drive Key Problems16Solving Drive Key Problems USB Drive Key not found identified Cause Solution Solving Front Panel Component Problems 17Solving Front Panel Component Problems Solving Internet Access Problems Solving Internet Access Problems18Solving Internet Access Problems Unable to connect to the Internet Cause Solution Modem Click on System and MaintenanceDouble-clickAgere Systems PCI-SV92PP Soft 19Solving Software Problems Solving Software ProblemsSolving 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 action On the Documentation and Diagnostics CD Post Numeric Codes and Text Messages Advanced Onboard Devices Control panel message Description Under Storage DPS Self-test Sata Enww 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 Cmos Locate, press, and hold the Cmos button in for five seconds Figure B-1 Cmos button Drive Protection System DPS Accessing DPS Through Computer Setup Select Storage DPS Self-Test Index