HP (Hewlett-Packard) D8C47UTABA ユーザーズマニュアル

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 D-8

Solving Keyboard Problems

A wireless keyboard/mouse is not working correctly. Symptoms include lagging mouse movement, jumpy mouse/
keyboard, or no function of mouse/keyboard and external drive.

Cause

Solution

If your computer is equipped with USB 3.0 ports, connected
USB 3.0 devices can interfere with the wireless keyboard
USB receiver.

Connect the wireless keyboard USB receiver to a USB 2.0
port that is separated from ports with USB 3.0 devices. If you
still experience interference, you may have to place the
connectors farther apart using an external USB hub.

Keyboard commands and typing are not recognized by the computer.

Cause

Solution

Keyboard connector is not properly connected.

Shut down the computer, reconnect the keyboard to the back
of the computer, and then 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.

Computer is in Sleep state.

Press the power button to resume from Sleep state.

CAUTION:

When attempting to resume from Sleep date,

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 is on.

Press the

Num Lock

key. The Num Lock light should be off if

you want to use the

arrow

keys on the keypad. You can

disable or enable the

Num Lock

key in Computer Setup at

Advanced > Device Options.

Solving Keyboard and Mouse Problems 167