Table 2-6Solving Display Problems (continued)

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 monitor's 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.

Vibrating or rattling noise coming from inside a CRT monitor when powered on.

Cause

Solution

 

 

Monitor degaussing coil has been activated.

None. It is normal for the degaussing coil to be activated when the monitor is powered on.

Clicking noise coming from inside a CRT monitor.

Cause

Solution

 

 

Electronic relays have been activated inside the monitor.

None. It is normal for some monitors to make a clicking noise when turned on and off, when going in and out of standby mode, and when changing resolutions.

ENWW

Solving Display Problems 25

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Image 31
HP dc7800 tower manual Image is not centered Cause Solution, Select ImageControl/ Horizontal Position or Vertical
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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.

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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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