Troubleshooting Guide
2–28 www.hp.com Troubleshooting Guide
Troubleshooting Without Diagnostics
Cursor will not move using 
the arrow keys on the 
keypad.
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.
Solving Keyboard Problems (Continued)
Problem Cause Solution
Solving Mouse Problems 
Problem Cause Solution
Mouse does not respond to 
movement or is too slow.
Mouse connector is 
not properly plugged 
into the back of the 
computer.
Shut down the computer using the 
keyboard.
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 up or down arrow key 
to select Shut Down and then 
press the Enter key.
3. Use the up or down arrow key 
to select the Shut Down 
option and then press the  
Enter key.
4. 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.
Mouse may need 
cleaning.
Remove the roller ball cover on the 
mouse and clean the internal 
components.
Mouse may need 
repair.
See the Worldwide Limited 
Warranty for terms and conditions.










