HP A6720f PC Troubleshooting Guide - Page 19

Keyboard and Mouse Symptom Possible solution Keyboard commands and typing are not recognized by the computer. Turn off the computer by using the mouse, reconnect the keyboard to the back of your computer, and then turn on your computer. Keyboard Print button does not work. Use the Print menu item in the program (usually located on the File menu). Cursor responds slowly to mouse movement. If you have a rollerball mouse, clean the roller ball. 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. For a mouse with a roller ball, use a mouse pad or other rough surface under the mouse. For an optical mouse, try a less reflective surface under the mouse. I cannot move the cursor using Press the Num Lock key. The Num Lock light should not be on if you want to use the arrow keys on the number the arrow keys on the number key pad. key pad. Cursor moves only vertically Remove the rollerball cover from bottom of mouse (rotate it counterclockwise), or horizontally (or it does not remove the ball, and clean it with a damp, lint-free cloth (not paper). Also move smoothly on the screen). clean the rollers on which the ball moves. Optical mouse does not track Place the mouse on a mouse pad or white sheet of paper, or gently wipe the the cursor well. light sensor lens on the bottom of the mouse with a lint-free cloth (not paper). Cursor moves too fast or too slow. Adjust the cursor speed: 1 Click the Windows Vista start button, Control Panel, Hardware and Sound, and then click Mouse. 2 Click the Pointer Options tab. 3 Adjust the Motion slider toward Slow or Fast to decrease or increase the speed at which the cursor responds to mouse movement. 4 Click OK. Troubleshooting Computer Problems 15