Solving General Problems | HP dc5750 specification

Table 2-1Solving General Problems (continued)

Cursor will not move using the arrow keys on the keypad.

Cause	Solution

The Num Lock key may be on.

Press the Num Lock key. The Num Lock light should not be on if you want to use the arrow keys. The Num Lock key can be disabled (or enabled) in Computer Setup.

There is no sound or sound volume is too low.

Cause	Solution

System volume may be set low or muted.	1. Check the F10 BIOS settings to make sure the internal
		system speaker is not muted (this setting does not affect
		the external speakers).
	2.	Make sure the external speakers are properly connected
		and powered on and that the speakers' volume control is
		set correctly.
	3.	Use the system volume control available in the operating
		system to make sure the speakers are not muted or to
		increase the volume.

The audio device may be connected to the wrong jack on the	Ensure that the device is connected to the correct jack on the
rear of the computer or the jack has been retasked to perform	rear of the computer. If the correct jack is being used and the
a different function.	problem persists, the jack may have been retasked to perform
	a function that is different from the default function. Open the
	Realtek control panel by clicking the Realtek HD Audio
	Manager icon in the task tray or the Realtek entry in the
	operating system's Control Panel and set the jack to the
	desired function.

Poor performance is experienced.

Cause	Solution

Processor is hot.	1. Make sure airflow to the computer is not blocked. Leave
		a 10.2-cm (4-inch) clearance on all vented sides of the
		computer and above the monitor to permit the required
		airflow.
	2.	Make sure fans are connected and working properly
		(some fans only operate when needed).
	3.	Make sure the processor heatsink is installed properly.

Hard drive is full.	Transfer data from the hard drive to create more space on the
	hard drive.

Low on memory.	Add more memory.

Hard drive fragmented.	Defragment hard drive.

Program previously accessed did not release reserved	Restart the computer.
memory back to the system.

Virus resident on the hard drive.	Run virus protection program.

ENWW	Solving General Problems 11

Image 17

HP dc5750 manual Solving General Problems, There is no sound or sound volume is too low Cause Solution

Contents

Troubleshooting Guide dc5750 Models Troubleshooting Guide Iii Iv About This Book Table of contents Accessing DPS Through Computer Setup Appendix B Password Security and Resetting Cmos HP Insight Diagnostics HP Insight Diagnostics Survey Tab Status Tab Log Tab Protecting the Software Protecting the SoftwareSelect a language and click Download Restoring the Software Safety and Comfort Safety and Comfort Before You Call for Technical Support Helpful Hints Helpful Hints Computer date and time display is incorrect Cause Solution Solving General Problems1Solving General Problems Poor performance is experienced Cause Solution Solving General ProblemsThere is no sound or sound volume is too low Cause Solution Cause Solution Enww 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 Solution Security Password Options Overrides the Boot Order enable command 4Solving Hard Drive Problems Solving Hard Drive Problems Storage Boot Order list Solving Hard Drive ProblemsComputer will not boot from hard drive Cause Solution Device Configuration 5Solving Media Card Reader Problems Solving Media Card Reader ProblemsCan not write to the media card Cause Solution Computer’s software is used to safely eject the card Solving Media Card Reader Problems Blank screen no video Cause Solution Solving Display Problems6Solving Display Problems Dim characters Cause Solution Solving Display Problems Image is not centered Cause Solution Install the video drivers included in the upgrade kitAdjust the horizontal or vertical position of the image Out of Range displays on screen Cause Solution Certain typed symbols do not appear correct Cause Solution Sound cuts in and out Cause Solution Solving Audio Problems7Solving Audio Problems On the Properties tab, make sure Enable digital CD Solving Audio ProblemsProperties Audio for this CD-ROM device is checked 8Solving Printer Problems Solving Printer Problems Solving Keyboard and Mouse Problems Solving Keyboard and Mouse Problems9Solving Keyboard Problems 10Solving Mouse Problems Restart Option and then press the Enter keyAfter the shutdown is complete, plug the mouse Solving Hardware Installation Problems Solving Hardware Installation Problems11 Solving Hardware Installation Problems Computer will not start Cause Solution Goes away 11Solving Hardware Installation ProblemsOnce bad card is identified, remove and replace bad Option card Solving Network Problems Solving Network Problems12Solving Network Problems Wake-on-LAN feature is not functioning Cause Solution Network status link light never flashes Diagnostics reports a failure Cause Solution New network card will not boot Cause Solution 13Solving Memory Problems Solving Memory ProblemsOut of memory error Cause Solution Memory count during Post is wrong Cause Solution Solving Memory Problems 14Solving Processor Problems Solving Processor ProblemsSome fans only operate when needed Make sure the processor heatsink is installed properly Solving CD-ROM and DVD Problems Solving CD-ROM and DVD Problems15Solving CD-ROM and DVD Problems Mode in Security Password Options Cannot eject compact disc tray-load unit Cause Solution Movie will not play in the DVD drive Cause Solution Enww 16Solving Drive Key Problems Solving Drive Key ProblemsUSB Drive Key not found identified Cause Solution System will not boot from USB Drive Key Cause Solution 17Solving Front Panel Component Problems Solving Front Panel Component ProblemsSolving Front Panel Component Problems Unable to connect to the Internet Cause Solution Solving Internet Access Problems18Solving Internet Access Problems Double-clickPorts COM & LPT Solving Internet Access Problems 19Solving Software Problems Solving Software Problems Contacting Customer Support Contacting Customer Support Enww 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 action Post Numeric Codes and Text Messages Advanced Onboard Devices Replace diskette drive Control panel message Description Under Storage DPS Self-test Save Changes and Exit Problem Problem goes away Network Server Mode Active and NoEmulation back to RAID and select File Is not spinning, make sure the fans cable is Table A-2Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Problem persists, replace the system board Check that both power supply cables areProperly connected to the system board Check to see if the 5Vaux light on Cmos Resetting the Password Jumper Using Computer Setup to Reset Cmos Clearing and Resetting the Cmos Figure B-1 Cmos switch Drive Protection System DPS Select Storage DPS Self-Test Accessing DPS Through Computer Setup Index Index Enww