Solving Keyboard and Mouse Problems

If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to the common causes and solutions listed in the following table.

Table 2-9Solving Keyboard Problems

Keyboard commands and typing are not recognized by the computer.

Cause

Solution

 

 

 

Keyboard connector is not properly connected.

1.

On the Windows XP Desktop, click Start > Shut Down.

 

 

On the Windows Vista Desktop, click Start, click the

 

 

arrow on the lower right corner of the Start menu, then

 

 

select Shut Down.

 

2.

After the shutdown is complete, reconnect the keyboard

 

 

to the back of the computer and restart the computer.

 

 

Program in use has stopped responding to commands.

Shut down your computer using the mouse and then restart

 

the computer.

 

 

Keyboard needs repairs.

See the Worldwide Limited Warranty for terms and conditions.

 

 

 

Wireless device error.

1.

Check the software, if available, for device status.

 

2.

Check/replace device batteries.

 

3.

Reset receiver and keyboard.

 

 

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.

Cursor will not move using the arrow keys on the keypad.

Cause

Solution

 

 

The Num Lock key may be on.

Press the Num Lock key. The Num Lock light should not be on if you want to use the arrow keys. The Num Lock key can be disabled (or enabled) in Computer Setup.

Table 2-10Solving Mouse Problems

Mouse does not respond to movement or is too slow.

Cause

Solution

 

 

Mouse connector is not properly plugged into the back of the

Shut down the computer using the keyboard.

computer.

1.

Press the Ctrl and Esc keys at the same time (or press

 

 

 

the Windows logo key) to display the Start menu.

 

2.

Use the arrow keys to select Shut Down and then press

 

 

the Enter key.

 

3.

After the shutdown is complete, plug the mouse

 

 

connector into the back of the computer (or the keyboard)

 

 

and restart.

 

 

Program in use has stopped responding to commands.

Shut down the computer using the keyboard then restart the

 

computer.

 

 

 

30 Chapter 2 Troubleshooting Without Diagnostics

ENWW

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HP dc7800 tower manual Solving Keyboard and Mouse Problems, 9Solving Keyboard Problems, 10Solving Mouse Problems
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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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