Solving Keyboard And Mouse Problems - HP Compaq Pro 4300 Maintenance And Service Manual

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 C-8
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
If your computer is equipped with USB 3.0 ports, connected
USB 3.0 devices can interfere with the wireless keyboard
USB receiver.
Keyboard commands and typing are not recognized by the computer.
Cause
Keyboard connector is not properly connected.
Program in use has stopped responding to commands.
Keyboard needs repairs.
Computer is in Sleep state.
Cursor will not move using the
Cause
The Num Lock
130 Appendix C Troubleshooting Without Diagnostics
Solving Keyboard Problems
arrow
key is on.
Solution
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.
Solution
Shut down the computer, reconnect the keyboard to the back
of the computer, and then restart the computer.
Shut down your computer using the mouse and then restart
the computer.
See the Worldwide Limited Warranty for terms and
conditions.
Press the power button to resume from Sleep state.
CAUTION:
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.
keys on the keypad.
Solution
Press the
you want to use the
disable or enable the
Advanced > Device Options.
When attempting to resume from Sleep date,
Num Lock key. The Num Lock light should be off if
arrow keys on the keypad. You can
Num Lock key in Computer Setup at