HP dc7800 tower manual 18Solving Internet Access Problems

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Solving Internet Access Problems

If you encounter Internet access problems, consult your Internet Service Provider (ISP) or refer to the common causes and solutions listed in the following table.

Table 2-18Solving Internet Access Problems

Unable to connect to the Internet.

Cause

Solution

 

 

Internet Service Provider (ISP) account is not set up properly.

Verify Internet settings or contact your ISP for assistance.

 

 

Modem is not set up properly.

Reconnect the modem. Verify the connections are correct

 

using the quick setup documentation.

 

 

Web browser is not set up properly.

Verify that the Web browser is installed and set up to work with

 

your ISP.

 

 

Cable/DSL modem is not plugged in.

Plug in cable/DSL modem. You should see a “power” LED light

 

on the front of the cable/DSL modem.

 

 

Cable/DSL service is not available or has been interrupted due

Try connecting to the Internet at a later time or contact your

to bad weather.

ISP. (If the cable/DSL service is connected, the “cable” LED

 

light on the front of the cable/DSL modem will be on.)

 

 

The CAT5 UTP cable is disconnected.

Connect the CAT5 UTP cable between the cable modem and

 

the computers’s RJ-45 connector. (If the connection is good,

 

the “PC” LED light on the front of the cable/DSL modem will be

 

on.)

 

 

 

IP address is not configured properly.

Contact your ISP for the correct IP address.

 

 

Cookies are corrupted. (A “cookie” is a small piece of

Windows Vista

information that a Web server can store temporarily with the

1.

Select Start > Control Panel.

Web browser. This is useful for having the browser remember

some specific information that the Web server can later

2.

Click Network and Internet.

retrieve.)

 

3.

Click Internet Options.

 

4.

In the Browsing history section on the General tab, click

 

 

the Delete button.

 

5.

Click the Delete cookies button.

 

Windows XP

 

1.

Select Start > Control Panel.

 

2.

Double-clickInternet Options.

 

3.

On the General tab, click the Delete Cookies button.

 

 

 

Cannot automatically launch Internet programs.

 

 

 

 

Cause

Solution

 

 

You must log on to your ISP before some programs will start.

Log on to your ISP and launch the desired program.

 

 

 

Internet takes too long to download Web sites.

Cause

Solution

 

 

Modem is not set up properly.

Verify that the modem is connected and communicating properly.

44 Chapter 2 Troubleshooting Without Diagnostics

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Contents Troubleshooting Guide Troubleshooting Guide Iii Iv About This Book Table of contents Accessing DPS Through Computer Setup HP Insight Diagnostics HP Insight DiagnosticsSurvey Tab Test Tab Log Tab Protecting the Software Protecting the SoftwareSelect a language and click Download HP Backup and Recovery Manager Safety and Comfort Before You Call for Technical Support Safety and ComfortTroubleshooting Without Diagnostics Helpful HintsHelpful 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 Cause unknown Restart the computerEnww Power supply shuts down intermittently Cause Solution Solving Power Problems2Solving Power Problems 3Solving Diskette Problems Solving Diskette ProblemsSolving 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 SolutionSecurity Password Options Solving Hard Drive Problems 4Solving Hard Drive ProblemsComputer will not boot from hard drive Cause Solution Solving Hard Drive ProblemsStorage Boot Order list Device ConfigurationTroubleshooting Without Diagnostics 5Solving Media Card Reader Problems Solving Media Card Reader ProblemsSolving Media Card Reader Problems Can not write to the media card Cause SolutionTroubleshooting Without Diagnostics 6Solving Display Problems Solving Display ProblemsSolving Display Problems Blank screen no video Cause SolutionDim characters Cause Solution Select 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 7Solving Audio Problems Solving Audio ProblemsSolving Audio Problems Sound cuts in and out Cause SolutionSound from headphones is not clear or muffled Cause Solution Line-in jack is not functioning properly Cause Solution8Solving Printer Problems Solving Printer ProblemsSolving Printer Problems 10Solving Mouse Problems Solving Keyboard and Mouse Problems9Solving Keyboard Problems Select Shut DownSolving Keyboard and Mouse Problems Computer will not start Cause Solution Solving Hardware Installation Problems11Solving Hardware Installation Problems Once bad card is identified, remove and replace bad Solving Hardware Installation ProblemsGoes away Option cardWake-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 13Solving Memory Problems Solving Memory ProblemsSolving Memory Problems Troubleshooting Without Diagnostics 14Solving Processor Problems Solving Processor ProblemsSolving Processor Problems Some fans only operate when neededMode in Security Password Options Solving CD-ROM and DVD Problems15Solving CD-ROM and DVD Problems Movie will not play in the DVD drive Cause SolutionSolving CD-ROM and DVD Problems Cannot eject compact disc tray-load unit Cause SolutionUSB Drive Key not found identified Cause Solution Solving Drive Key Problems16Solving Drive Key Problems System will not boot from USB Drive Key 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 Contacting Customer SupportPost 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 Advanced Onboard Devices Computer Setup or Windows utilities Under Storage DPS Self-test SataKeyboard failure while Network Server Mode Table A-2Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended ActionUse the Smart ID technology before Red Power LED flashes ten Bad option card Cmos Resetting the Password Jumper Resetting the Password JumperClearing 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
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dc7800 tower specifications

The HP dc7800 Tower is a powerful desktop computer designed for professional and enterprise environments. Known for its stability, performance, and versatility, this model has secured its place in a variety of business settings. Launched in the mid-2000s, it embodies HP’s commitment to quality and innovation.

One of the main features of the HP dc7800 is its form factor. The tower configuration allows for easy upgrades and maintenance, providing ample space for additional hard drives, memory, and other components. This level of accessibility makes it ideal for businesses that need to adapt their systems to changing requirements.

The dc7800 is powered by Intel's Core 2 Duo processors, offering dual-core technology that enhances multitasking capabilities. With clock speeds ranging from 1.8 GHz to 3.0 GHz, this system can handle demanding applications with relative ease. It also supports Intel's vPro technology, which allows for remote management and security features, making it an excellent choice for organizations prioritizing IT control.

Another notable characteristic is the support for up to 8GB of DDR2 RAM. This allows for efficient data processing and improved performance when running multiple applications simultaneously. Additionally, the dc7800 features multiple storage options, accommodating both SATA hard drives and solid-state drives, which can significantly enhance boot times and overall system responsiveness.

Connectivity options on the HP dc7800 are robust. It includes a variety of USB ports, audio jacks, and optional legacy ports, ensuring compatibility with a wide range of peripherals and accessories. Networking capabilities are also prominent, with built-in Gigabit Ethernet providing high-speed internet access.

Furthermore, the desktop tower is designed with energy efficiency in mind. It meets ENERGY STAR certification standards, which not only helps reduce operational costs but also minimizes environmental impact.

Overall, the HP dc7800 Tower embodies a blend of performance, expandability, and energy efficiency, making it a reliable choice for businesses in need of a robust desktop solution. With its legacy of dependability and its suite of modern technologies, it continues to serve as a valuable asset in enterprise environments.
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