Install the video drivers included in the upgrade kit | HP dc5750

Table 2-6Solving Display Problems (continued)

Blurry video or requested resolution cannot be set.

Cause	Solution

If the graphics controller was upgraded, the correct graphics	Install the video drivers included in the upgrade kit.
drivers may not be loaded.

Monitor is not capable of displaying requested resolution.	Change requested resolution.

Graphics card is bad.	Replace the graphics card.

The picture is broken up, rolls, jitters, or flashes.

Cause	Solution

The monitor connections may be incomplete or the monitor	1. Be sure the monitor cable is securely connected to the
may be incorrectly adjusted.		computer.
	2.	In a two-monitor system or if another monitor is in close
		proximity, be sure the monitors are not interfering with
		each other’s electromagnetic field by moving them apart.
	3.	Fluorescent lights or fans may be too close to the monitor.

Monitor needs to be degaussed.	Degauss the monitor. Refer to the documentation that came
	with the monitor for instructions.

Image is not centered.

Cause	Solution

Position may need adjustment.	Press the Menu button to access the OSD menu. Select
	ImageControl/ Horizontal Position or Vertical Position to
	adjust the horizontal or vertical position of the image.

“No Connection, Check Signal Cable” displays on screen.

Cause	Solution

Monitor video cable is disconnected.

Connect the video cable between the monitor and computer.

CAUTION Ensure that the computer power is off while connecting the video cable.

“Out of Range” displays on screen.

Cause	Solution

Video resolution and refresh rate are set higher than what the monitor supports.

Restart the computer and enter Safe Mode. Change the settings to a supported setting then restart the computer so that the new settings take effect.

24 Chapter 2 Troubleshooting Without Diagnostics

ENWW

Image 30

HP dc5750 manual Install the video drivers included in the upgrade kit, Image is not centered 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