HP 810-135qe manual Wireless keyboard and mouse, Possible solution For a mouse with a roller ball

Keyboard and mouse (with cable) (continued)

Symptom

Cursor responds slowly, moves only vertically or horizontally, or does not track smoothly.

Possible solution

For a mouse with a roller ball:

￿Clean the roller ball: Remove the roller ball cover from bottom of mouse (rotate it counterclockwise), remove the ball, and clean it with a damp, lint-free cloth (not paper). Also clean the rollers on which the ball moves.

￿Use a mouse pad or other rough surface under the mouse.

For an optical mouse:

￿ Clean the optical mouse: Gently wipe the light sensor lens on the bottom of the mouse with a lint-free cloth

(not paper).

￿ Use a mouse pad, white sheet of paper, or other less reflective surface under the mouse.

	For detailed cleaning instructions, go to:
	http://www.hp.com/support
	Select your country/region and language, search on your
	computer model number, and then search on the keyword
	cleaning.
I cannot move the	Press the Num Lock key on the keyboard to turn off the Num
cursor using the arrow	Lock light. The Num Lock light should not be on if you want to
keys on the number	use the arrow keys on the number key pad.
key pad.

Wireless keyboard and mouse

Symptom

Wireless keyboard or mouse does not work or is not detected.

Possible solution

Check for these problems:

￿Ensure you are using the wireless keyboard or wireless mouse within range of the receiver, approximately

10 meters for normal use, and within 30 cm during initial setup or for resynchronization.

￿Replace the batteries in the keyboard and mouse: Turn the devices over, turn the mouse off, take off the battery cover, remove the old batteries, insert new alkaline batteries, replace the battery cover, and then turn on the mouse.

NOTE: Do not use rechargeable batteries.

￿Ensure the mouse is not in Suspend mode, which occurs after 20 minutes of inactivity. Click the left mouse button to reactivate it.

Troubleshooting and Maintenance 33