HP Compaq dx2250 Service & Reference Manual page 142

Table D-10 Solving Mouse Problems (continued)
Mouse does not respond to movement or is too slow.
Cause
Program in use has stopped responding to commands.
Mouse may need cleaning.
Mouse may need repair.
Wireless device error.
Computer is in standby mode.
Mouse will only move vertically, horizontally, or movement is jerky.
Cause
Mouse roller ball or the rotating encoder shafts that make
contact with the ball are dirty.
136 Appendix D Troubleshooting Without Diagnostics
Solution
3. Use the up or down arrow
option and then press the
4. After the shutdown is complete, plug the mouse
connector into the back of the computer (or the keyboard)
and restart.
Shut down the computer using the keyboard then restart the
computer.
Remove the roller ball cover on the mouse and clean the
internal components.
See the Worldwide Limited Warranty for terms and conditions.
1. Check the software, if available, for device status.
2. Check/replace device batteries.
3. Reset receiver and mouse.
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.
Solution
Remove roller ball cover from the bottom of the mouse and
clean the internal components with a mouse cleaning kit
available from most computer stores.
key to select the Shut Down
Enter key.
ENWW