HP dx7300 manual 6Solving Display Problems, Blank screen no video Cause Solution

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Solving Display Problems

If you encounter display problems, see the documentation that came with the monitor and to the common causes and solutions listed in the following table.

Table 2-6Solving Display Problems

Blank screen (no video).

Cause	Solution

Monitor is not turned on and the monitor light is not on.	Turn on the monitor and check that the monitor light is on.

Bad monitor.	Try a different monitor.

The cable connections are not correct.	Check the cable connection from the monitor to the computer
	and to the electrical outlet.

You may have a screen blanking utility installed or energy	Press any key or click the mouse button and, if set, type your
saver features are enabled.	password.

System ROM is corrupted; system is running is Boot Block	Reflash the system ROM with the latest BIOS image. See the
Emergency Recovery Mode (indicated by eight beeps).	“Boot Block Emergency Recovery Mode” section of the
	Desktop Management Guide on the Documentation and
	Diagnostics CD for more information

You are using a fixed-sync monitor and it will not sync at the	Be sure that the monitor can accept the same horizontal scan
resolution chosen.	rate as the resolution chosen.

Computer is in standby mode.	Press the power button to resume from standby mode.

		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.

Monitor cable is plugged into the wrong connector.

If the computer system has both an integrated graphics connector and an add-in graphics card connector, plug the monitor cable into the graphics card connector on the back of the computer.

Monitor settings in the computer are not compatible with the monitor.

1.In Windows XP Control Panel, double-click the Display icon and select the Settings tab.

In Windows Vista Control Panel, under Appearance and Personalization, select Adjust screen resolution.

2.Use the sliding control to reset the resolution.

Cannot enable integrated graphics after installing a PCI Express graphics card.

Cause	Solution

On systems with Intel integrated graphics, the integrated graphics cannot be enabled after installing a PCI Express graphics card.

The integrated graphics can be enabled in Computer Setup if a standard PCI graphics card is installed.

ENWW	Solving Display Problems 23

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Contents Troubleshooting Guide Troubleshooting Guide Iii Iv About This Book Table of contents Accessing DPS Through Computer Setup Appendix B Password Security and Resetting CmosHP Insight Diagnostics HP Insight DiagnosticsSurvey Tab Test Tab Log Tab Protecting the Software Protecting the SoftwareSelect a language and click Download HP Backup and Recovery Manager Safety and Comfort Safety and Comfort Before You Call for Technical SupportHelpful Hints Helpful Hints Computer date and time display is incorrect Cause Solution Solving General Problems1Solving General Problems There is no sound or sound volume is too low Cause Solution Solving General ProblemsCannot remove computer cover or access panel Cause Solution Poor performance is experienced Cause SolutionCause Solution Run Windows XP or Start Accessories RunHard 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 Problem has occurred with a disk transaction Cause Solution Cannot format diskette Cause SolutionDiskette drive cannot read a diskette Cause Solution Invalid system disk message is displayed Cause SolutionBoot Storage Boot OrderSecurity Password Options Storage Storage Options Removable Media4Solving Hard Drive Problems Solving Hard Drive ProblemsHard drive error occurs Cause Solution Disk transaction problem Cause SolutionNonsystem disk/NTLDR missing message Cause Solution Solving Hard Drive ProblemsComputer 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 Out of Range displays on screen Cause Solution Image is not centered 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 8Solving Printer Problems Solving Printer ProblemsSolving Printer Problems Select Shut Down Solving Keyboard and Mouse Problems9Solving Keyboard Problems 10Solving Mouse Problems Solving Keyboard and Mouse ProblemsComputer will not start Cause Solution Solving Hardware Installation Problems11Solving Hardware Installation Problems Goes away Solving Hardware Installation ProblemsOnce bad card is identified, remove and replace bad Option cardWake-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 SolutionInsufficient memory error during operation Cause Solution Solving Processor Problems Solving Processor Problems14Solving Processor Problems Some fans only operate when neededMode 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 Solution17Solving Front Panel Component Problems Solving Front Panel Component ProblemsSolving Internet Access Problems Solving Internet Access Problems18Solving Internet Access Problems Unable to connect to the Internet Cause SolutionModem Click on System and MaintenanceDouble-clickAgere Systems PCI-SV92PP Soft 19Solving Software Problems Solving Software ProblemsSolving Software Problems Contacting Customer Support Post Error Messages Post Numeric Codes and Text Messages Appendix a Post Error MessagesTable A-1Numeric Codes and Text Messages Control panel message Description Recommended actionPost Numeric Codes and Text Messages On the Documentation and Diagnostics CDAdvanced Onboard Devices Control panel message Description Sata Under Storage DPS Self-testEnww 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 Using Computer Setup to Reset Cmos Clearing and Resetting the CmosFigure B-1 Cmos button Locate, press, and hold the Cmos button in for five secondsDrive Protection System DPS Select Storage DPS Self-Test Accessing DPS Through Computer SetupIndex

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