Solving General Problems | HP dx7300 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.

Cannot remove computer cover or access panel.

Cause	Solution

Smart Cover Lock, featured on some computers, is locked.

Unlock the Smart Cover Lock using Computer Setup.

The Smart Cover FailSafe Key, a device for manually disabling the Smart Cover Lock, is available from HP. You will need the FailSafe Key in case of forgotten password, power loss, or computer malfunction. Order PN 166527-001 for the wrench- style key or PN 166527-002 for the screwdriver bit key.

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.

ENWW	Solving General Problems 11

Image 17

HP dx7300 manual Solving General Problems, There is no sound or sound volume is too low Cause Solution

Contents

Troubleshooting Guide 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 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 Support Helpful 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 Solution Cause Solution Run Windows XP or Start Accessories Run 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 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 Boot Storage Boot OrderSecurity Password Options Storage Storage Options Removable Media 4Solving Hard Drive Problems Solving Hard Drive ProblemsHard drive error occurs Cause Solution Disk transaction problem Cause Solution Nonsystem 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 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 Out of Range displays on screen Cause Solution Image is not centered 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 10Solving Mouse Problems Solving Keyboard and Mouse Problems Computer 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 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 17Solving Front Panel Component Problems Solving 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 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 On the Documentation and Diagnostics CD Advanced Onboard Devices Control panel message Description Sata Under Storage DPS Self-test 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 Using Computer Setup to Reset Cmos Clearing and Resetting the Cmos Figure B-1 Cmos button Locate, press, and hold the Cmos button in for five seconds Drive Protection System DPS Select Storage DPS Self-Test Accessing DPS Through Computer Setup Index