Cause Solution | HP dc5750 specs

Table 2-1Solving General Problems (continued)

Poor performance is experienced.

Cause	Solution

Too many applications running.	1.	Close unnecessary applications to free up memory.
		Some applications run in the background and can be
		closed by right-clicking on their corresponding icons in the
		task tray. To prevent these applications from launching at
		startup, go to Start > Run and type msconfig. On the
		Startup tab of the System Configuration Utility, uncheck
		applications that you do not want to launch automatically.

			CAUTION Do not prevent applications from
			launching at startup that are required for proper
			system operation.

	2.	Add more memory.

Some software applications, especially games, are stressful	1.	Lower the display resolution for the current application or
on the graphics subsystem		consult the documentation that came with the application
		for suggestions on how to improve performance by
		adjusting parameters in the application.
	2.	Add more memory.
	3.	Upgrade the graphics solution.

Cause unknown.	Restart the computer.

Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but LEDs continue flashing).

Cause	Solution

Processor thermal protection activated:

A fan may be blocked or not turning.

OR

The heatsink is not properly attached to the processor.

1.Ensure that the computer air vents are not blocked and the processor cooling fan is running.

2.Open hood, press power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header.

3.If fan is plugged in, but is not spinning, then replace the heatsink/fan assembly.

4.Contact an authorized reseller or service provider.

12 Chapter 2 Troubleshooting Without Diagnostics

ENWW

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HP dc5750 manual Cause Solution

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 Setup HP Insight Diagnostics HP Insight Diagnostics Survey Tab Status Tab Log Tab Protecting the Software Select a language and click DownloadProtecting the Software Restoring the Software Safety and Comfort Before You Call for Technical Support Safety and Comfort Helpful Hints Helpful Hints Solving General Problems 1Solving General ProblemsComputer date and time display is incorrect Cause Solution Solving General Problems There is no sound or sound volume is too low Cause SolutionPoor performance is experienced Cause Solution Cause Solution Enww Solving Power Problems 2Solving Power ProblemsPower supply shuts down intermittently Cause Solution Solving Diskette Problems Solving Diskette Problems3Solving Diskette Problems Diskette drive cannot read a diskette Cause Solution Cannot format diskette Cause SolutionProblem has occurred with a disk transaction Cause Solution Invalid system disk message is displayed Cause Solution Overrides the Boot Order enable command Security Password Options Solving Hard Drive Problems 4Solving Hard Drive Problems Computer will not boot from hard drive Cause Solution Solving Hard Drive ProblemsStorage Boot Order list Device Configuration Can not write to the media card Cause Solution Solving Media Card Reader Problems5Solving Media Card Reader Problems Computer’s software is used to safely eject the card Solving Media Card Reader Problems Solving Display Problems 6Solving Display ProblemsBlank screen no video Cause Solution Solving Display Problems Dim characters Cause Solution Adjust the horizontal or vertical position of the image Install the video drivers included in the upgrade kitImage 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 7Solving Audio ProblemsSound cuts in and out Cause Solution Properties Solving Audio ProblemsOn the Properties tab, make sure Enable digital CD Audio for this CD-ROM device is checked Solving Printer Problems 8Solving Printer Problems 9Solving Keyboard Problems Solving Keyboard and Mouse ProblemsSolving Keyboard and Mouse Problems 10Solving Mouse Problems Option and then press the Enter key After the shutdown is complete, plug the mouseRestart 11 Solving Hardware Installation Problems Solving Hardware Installation ProblemsSolving Hardware Installation Problems Computer will not start Cause Solution Once bad card is identified, remove and replace bad 11Solving Hardware Installation ProblemsGoes away Option card 12Solving Network Problems Solving Network ProblemsSolving Network Problems Wake-on-LAN feature is not functioning Cause Solution Diagnostics reports a failure Cause Solution Network status link light never flashes New network card will not boot Cause Solution Out of memory error Cause Solution Solving Memory Problems13Solving Memory Problems Memory count during Post is wrong Cause Solution Solving Memory Problems Some fans only operate when needed Solving Processor Problems14Solving Processor Problems Make sure the processor heatsink is installed properly 15Solving CD-ROM and DVD Problems Solving CD-ROM and DVD ProblemsSolving CD-ROM and DVD Problems Mode in Security Password Options Movie will not play in the DVD drive Cause Solution Cannot eject compact disc tray-load unit Cause Solution Enww USB Drive Key not found identified Cause Solution Solving Drive Key Problems16Solving Drive Key Problems System will not boot from USB Drive Key Cause Solution Solving Front Panel Component Problems Solving Front Panel Component Problems17Solving Front Panel Component Problems Solving Internet Access Problems 18Solving Internet Access ProblemsUnable to connect to the Internet Cause Solution Solving Internet Access Problems Double-clickPorts COM & LPT Solving Software Problems 19Solving Software Problems Contacting Customer Support Contacting Customer Support Enww Post Error Messages Table A-1Numeric Codes and Text Messages Appendix a Post Error MessagesPost Numeric Codes and Text Messages Control panel message Description Recommended action Post Numeric Codes and Text Messages Advanced Onboard Devices Control panel message Description Replace diskette drive Under Storage DPS Self-test Problem Problem goes away Network Server Mode Active and No Emulation back to RAID and select FileSave Changes and Exit Table A-2Diagnostic Front Panel LEDs and Audible Codes Is not spinning, make sure the fans cable is Activity Beeps Possible Cause Recommended Action Properly connected to the system board Check that both power supply cables areProblem persists, replace the system board Check to see if the 5Vaux light on Cmos Resetting the Password Jumper Clearing and Resetting the Cmos Using Computer Setup to Reset Cmos Figure B-1 Cmos switch Drive Protection System DPS Accessing DPS Through Computer Setup Select Storage DPS Self-Test Index Index Enww