HP dc5750 manual Check that both power supply cables are, Properly connected to the system board

Page 64

Table A-2Diagnostic Front Panel LEDs and Audible Codes (continued)

Activity	Beeps	Possible Cause	Recommended Action

Red Power LED flashes nine	9	System powers on but is	1.	Check that the voltage selector, located on
times, once every second,		unable to boot.		the rear of the power supply (some models),
followed by a two second				is set to the appropriate voltage. Proper
pause. Beeps stop after fifth				voltage setting depends on your region.
iteration but LEDs continue			2.	Replace the system board.
until problem is solved.			2.	Replace the system board.
			3.	Replace the processor.

Red Power LED flashes ten	10	Bad option card.	1.	Check each option card by removing the card
times, once every second,				(one at a time if multiple cards), then power
followed by a two second				on the system to see if fault goes away.
pause. Beeps stop after fifth			2.	Once a bad card is identified, remove and
iteration but LEDs continue			2.	Once a bad card is identified, remove and
until problem is solved.				replace the bad option card.
			3.	Replace the system board.

System does not power on and	None	System unable to power	Press and hold the power button for less than 4
LEDs are not flashing.		on.	seconds. If the hard drive LED turns green, the
			power button is working correctly. Try the
			following:
			1.	Check that the voltage selector (some
				models), located on the rear of the power
				supply, is set to the appropriate voltage.
				Proper voltage setting depends on your
				region.
			2.	Replace the system board.
			OR
			Press and hold the power button for less than 4
			seconds. If the hard drive LED does not turn on
			green then:
			1.	Check that the unit is plugged into a working
				AC outlet.
			2.	Open hood and check that the power button
				harness is properly connected to the system
				board.
			3.	Check that both power supply cables are
				properly connected to the system board.
			4.	Check to see if the 5V_aux light on the
				system board is turned on. If it is turned on,
				then replace the power button harness. If the
				problem persists, replace the system board.
			5.	If the 5V_aux light on the system board is not
				turned on, remove the expansion cards one

at a time until the 5V_aux light on the system board turns on. It the problem persists, replace the power supply.

58 Appendix A POST Error Messages

ENWW

Image 64

Contents Troubleshooting Guide dc5750 Models 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 Status Tab Log Tab Select a language and click Download Protecting the SoftwareProtecting the Software Restoring the Software 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 There is no sound or sound volume is too low Cause Solution Solving General ProblemsPoor performance is experienced Cause Solution Cause Solution Enww 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 SolutionOverrides the Boot Order enable command Security Password OptionsSolving Hard Drive Problems 4Solving Hard Drive ProblemsSolving Hard Drive Problems Storage Boot Order listComputer will not boot from hard drive Cause Solution Device ConfigurationSolving Media Card Reader Problems 5Solving Media Card Reader ProblemsCan not write to the media card Cause Solution Computer’s software is used to safely eject the cardSolving Media Card Reader Problems 6Solving Display Problems Solving Display ProblemsBlank screen no video Cause Solution Solving Display Problems Dim characters Cause SolutionInstall the video drivers included in the upgrade kit Image is not centered Cause SolutionAdjust the horizontal or vertical position of the image Out of Range displays on screen Cause SolutionCertain typed symbols do not appear correct Cause Solution 7Solving Audio Problems Solving Audio ProblemsSound cuts in and out Cause Solution Solving Audio Problems On the Properties tab, make sure Enable digital CDProperties Audio for this CD-ROM device is checkedSolving Printer Problems 8Solving Printer ProblemsSolving Keyboard and Mouse Problems Solving Keyboard and Mouse Problems9Solving Keyboard Problems 10Solving Mouse ProblemsAfter the shutdown is complete, plug the mouse Option and then press the Enter keyRestart Solving Hardware Installation Problems Solving Hardware Installation Problems11 Solving Hardware Installation Problems Computer will not start Cause Solution11Solving Hardware Installation Problems Goes awayOnce bad card is identified, remove and replace bad Option cardSolving Network Problems Solving Network Problems12Solving Network Problems Wake-on-LAN feature is not functioning Cause SolutionDiagnostics reports a failure Cause Solution Network status link light never flashesNew network card will not boot Cause Solution Solving Memory Problems 13Solving Memory ProblemsOut of memory error Cause Solution Memory count during Post is wrong Cause SolutionSolving Memory Problems Solving Processor Problems 14Solving Processor ProblemsSome fans only operate when needed Make sure the processor heatsink is installed properlySolving CD-ROM and DVD Problems Solving CD-ROM and DVD Problems15Solving CD-ROM and DVD Problems Mode in Security Password OptionsMovie will not play in the DVD drive Cause Solution Cannot eject compact disc tray-load unit Cause SolutionEnww Solving Drive Key Problems 16Solving Drive Key ProblemsUSB Drive Key not found identified Cause Solution System will not boot from USB Drive Key Cause SolutionSolving Front Panel Component Problems Solving Front Panel Component Problems17Solving Front Panel Component Problems 18Solving Internet Access Problems Solving Internet Access ProblemsUnable to connect to the Internet Cause Solution Solving Internet Access Problems Double-clickPorts COM & LPTSolving Software Problems 19Solving Software ProblemsContacting Customer Support Contacting Customer SupportEnww 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 actionPost Numeric Codes and Text Messages Advanced Onboard Devices Control panel message Description Replace diskette driveUnder Storage DPS Self-test Emulation back to RAID and select File Problem Problem goes away Network Server Mode Active and No Save Changes and Exit Table A-2Diagnostic Front Panel LEDs and Audible Codes Is not spinning, make sure the fans cable isActivity Beeps Possible Cause Recommended Action Check that both power supply cables are Problem persists, replace the system boardProperly connected to the system board Check to see if the 5Vaux light onCmos Resetting the Password Jumper Clearing and Resetting the Cmos Using Computer Setup to Reset CmosFigure B-1 Cmos switch Drive Protection System DPS Accessing DPS Through Computer Setup Select Storage DPS Self-TestIndex IndexEnww

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