HP dc7900 manual Enww

Page 38

Table 2-10Solving Mouse Problems (continued)

 

Mouse does not respond to movement or is too slow.

 

 

 

Cause

Solution

 

 

Mouse may need cleaning.

Remove the roller ball cover on the mouse and clean the

 

internal components.

 

 

Mouse may need repair.

See the Worldwide Limited Warranty for terms and conditions.

 

 

Computer is in standby mode.

Press the power button to resume from standby mode.

 

CAUTION: When attempting to resume from standby mode,

 

do not hold down the power button for more than four seconds.

 

Otherwise, the computer will shut down and you will lose any

 

unsaved data.

 

Mouse will only move vertically, horizontally, or movement is jerky.

 

 

Cause

Solution

 

 

Mouse roller ball or the rotating encoder shafts that make contact with the ball are dirty.

Remove roller ball cover from the bottom of the mouse and clean the internal components with a mouse cleaning kit available from most computer stores.

32 Chapter 2 Troubleshooting Without Diagnostics

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Contents Troubleshooting Guide Troubleshooting Guide Iii Iv About This Book Table of contents Solving Software Problems Contacting Customer Support Accessing DPS Through Computer SetupHP Insight Diagnostics HP Insight DiagnosticsSurvey Tab Test Tab Log Tab Protecting the Software Protecting the SoftwareClick the Download button HP Backup and Recovery Manager Safety and Comfort Before You Call for Technical Support Safety and ComfortHelpful Hints Helpful Hints Computer date and time display is incorrect Cause Solution Solving General Problems1Solving General Problems Cannot remove computer cover or access panel Cause Solution Solving General ProblemsThere is no sound or sound volume is too low Cause Solution Poor performance is experienced Cause SolutionCause Solution You do not want to launch automaticallyEnww Power supply shuts down intermittently Cause Solution Solving Power Problems2Solving Power Problems Solving Power Problems Diskette drive light stays on Cause Solution Solving Diskette Problems3Solving Diskette Problems Drive not found Cause SolutionProblem has occurred with a disk transaction Cause Solution Solving Diskette ProblemsCannot format diskette Cause Solution Diskette drive cannot read a diskette Cause SolutionBoot Cannot Boot to Diskette Cause SolutionStorage Boot Order Security Password Options4Solving Hard Drive Problems Solving Hard Drive ProblemsSolving Hard Drive Problems Computer will not boot from hard drive Cause Solution Nonsystem disk/NTLDR missing message Cause SolutionStorage Boot Order list Device ConfigurationAgain Can not write to the media card Cause Solution Solving Media Card Reader Problems5Solving Media Card Reader Problems Solving Media Card Reader Problems Blank screen no video Cause Solution Solving Display Problems6Solving Display Problems Personalization, select Adjust screen resolutionSolving Display Problems Dim characters Cause SolutionSelect ImageControl/ Horizontal Position or Vertical Image is not centered Cause SolutionOut 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 Advanced Device Options Internal Speaker Solving Audio ProblemsLine-in jack is not functioning properly Cause Solution Solving Printer Problems 8Solving Printer Problems9Solving Keyboard Problems Solving Keyboard and Mouse ProblemsSolving Keyboard and Mouse Problems 10Solving Mouse ProblemsEnww 11Solving Hardware Installation Problems Solving Hardware Installation ProblemsSolving Hardware Installation Problems Computer will not start Cause SolutionOption card Goes awayOnce bad card is identified, remove and replace bad 12Solving Network Problems Solving Network ProblemsSolving Network Problems Wake-on-LAN feature is not functioning Cause SolutionNetwork status link light never flashes Cause Solution Diagnostics reports a failure Cause SolutionNew 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 SolutionSolving Memory Problems Insufficient memory error during operation Cause SolutionSome fans only operate when needed Solving Processor Problems14Solving Processor Problems Make sure the processor heatsink is installed properly15Solving CD-ROM and DVD Problems Solving CD-ROM and DVD ProblemsSolving 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 USB flash drive not found identified Cause Solution Solving USB Flash Drive Problems16Solving USB Flash Drive Problems System will not boot from USB flash drive Cause Solution17Solving 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-clickAgere Systems PCI-SV92PP Soft Solving Internet Access ProblemsClick on System and Maintenance ModemSolving Software Problems 19Solving Software ProblemsContacting Customer Support Post Error Messages Table A-1Numeric Codes and Text Messages Post Numeric Codes and Text MessagesPost Numeric Codes and Text Messages Control panel message Description Recommended actionContact an authorized dealer or reseller for Verify monitor is attached and turned Under Storage DPS Self-test SataEmulation back to RAID and select File Emulation to IDE, and select File SaveSelect Security Drivelock Security Save Changes and ExitKeyboard failure while Network Server Mode Table A-2Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended ActionReplace one device at a time and repeat Red Power LED flashes eight Invalid ROM based on bad Enww Cmos Resetting the Password Jumper Clearing and Resetting the Cmos Locate, press, and hold the Cmos button in for five seconds Figure B-1 Cmos buttonDrive Protection System DPS Accessing DPS Through Computer Setup Select Storage DPS Self-TestIndex Index
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dc7900 specifications

The HP dc7900 is a well-regarded desktop solution that serves as a testament to HP's commitment to performance, reliability, and user accessibility. Introduced as part of HP’s Compaq line and designed primarily for business professionals, the dc7900 combines powerful processing capabilities with a compact form factor that suits various office environments.

One of the standout features of the HP dc7900 is its robust configuration options. It typically comes equipped with Intel's Core 2 Duo or Quad processors, giving users the ability to handle demanding applications seamlessly. The inclusion of Intel's technologies, such as Intel vPro, enhances remote management and IT control, making it an ideal choice for businesses looking to streamline their operations.

The dc7900 is designed with flexibility in mind. It offers multiple form factors, including mini-tower, small form factor, and ultra-slim desktop configurations. This variety enables organizations to choose a model that best fits their workspace requirements, maximizing both efficiency and aesthetics. The small footprint models are particularly beneficial in space-constrained environments, while the mini-tower version provides expandability for future upgrades.

In terms of graphics capabilities, the HP dc7900 typically features integrated Intel graphics, with options to install discrete graphics cards for users who require enhanced visual performance. This makes the dc7900 suitable for tasks ranging from standard office applications to more graphics-intensive responsibilities.

Connectivity is another key characteristic of the HP dc7900. It is equipped with a variety of ports, including USB 2.0 and audio jacks, allowing users to connect peripherals easily. Additionally, the dc7900 supports legacy connections, making it easier for businesses with older equipment to integrate new systems without hassle.

Durability and reliability are hallmarks of the HP dc7900. Built with high-quality materials and subjected to rigorous testing, this desktop is designed to withstand the demands of a bustling office environment. Furthermore, HP's comprehensive warranty and support options assure businesses of the reliability of their investment.

The HP dc7900 is not just a powerful desktop; it’s a versatile and dependable solution for modern businesses. With its combination of performance, expandability, and solid build quality, the dc7900 remains a relevant choice for those looking to enhance their productivity and efficiency in the workplace.
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