Solving Display Problems

If you encounter display problems, see the documentation that came with the monitor and to the common causes and solutions listed in the following table.

Table 2-6Solving Display Problems

Blank screen (no video).

Cause

Solution

 

 

Monitor is not turned on and the monitor light is not on.

Turn on the monitor and check that the monitor light is on.

 

 

Bad monitor.

Try a different monitor.

 

 

The cable connections are not correct.

Check the cable connection from the monitor to the computer

 

and to the electrical outlet.

 

 

You may have a screen blanking utility installed or energy

Press any key or click the mouse button and, if set, type your

saver features are enabled.

password.

 

 

System ROM is corrupted; system is running is Boot Block

Reflash the system ROM with the latest BIOS image. See the

Emergency Recovery Mode (indicated by eight beeps).

“Boot Block Emergency Recovery Mode” section of the

 

Desktop Management Guide for more information

 

 

You are using a fixed-sync monitor and it will not sync at the

Be sure that the monitor can accept the same horizontal scan

resolution chosen.

rate as the resolution chosen.

 

 

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.

Monitor cable is plugged into the wrong connector.

If the computer system has both an integrated graphics connector and an add-in graphics card connector, plug the monitor cable into the graphics card connector on the back of the computer.

Monitor settings in the computer are not compatible with the monitor.

1.In Windows XP Control Panel, double-click the Display icon and select the Settings tab.

In Windows Vista Control Panel, under Appearance and Personalization, select Adjust screen resolution.

2.Use the sliding control to reset the resolution.

Cannot enable integrated graphics after installing a PCI Express graphics card.

Cause

Solution

 

 

On systems with Intel integrated graphics, the integrated graphics cannot be enabled after installing a PCI Express x16.

The integrated graphics can be enabled in Computer Setup if a PCI or PCI Express x1 graphics card is installed, but it cannot be enabled if there is a graphics card in the PCI Express x16 slot.

Blank screen and the power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.)

Cause

Solution

 

 

Pre-video memory error.

1.Reseat DIMMs. Power on the system.

2.Replace DIMMs one at a time to isolate the faulty module.

ENWW

Solving Display Problems 23

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HP dc7800 tower manual 6Solving Display Problems, Blank screen no video Cause Solution
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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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