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HP TouchSmart Desktop PCs - Troubleshooting Touch Screen Issues in Vista

This support document pertains to HP TouchSmart PCs with Windows Vista.

Pressing the touch screen does not do anything

Pressing the touch screen in Windows or the TouchSmart software does not do anything - the mouse pointer does not move or objects are not highlighted.
Perform each of the following steps until the mouse pointer moves to a point that is touched on the Windows desktop:
  1. Clean the screen.
    With the computer off, spray glass cleaner onto a soft, damp cloth and gently wipe the screen to remove dirt and smudges. Do not spray cleaner directly onto the screen. Give special attention to the upper left and right inside edges of the screen. Turn the computer on when finished.
    Press the screen to see if it responds. If not, continue.
  2. Turn off the computer from the Start menu, and unplug the power cord.
  3. With the power cord unplugged, press the power button on the computer case and wait 5 seconds.
  4. Plug in the power cord, and press the power button to turn on the computer.
    Press the screen to see if it responds. If not, continue.
  5. Make sure that touch and audio is enabled as follows:
    1. Click Start , and then Control Panel.
    2. Click Hardware & Sound.
    3. Scroll down and click HP Touch Screen Configuration.
    4. From the Global Settings tab, make sure Touch Screen and Touch Screen Sound are selected (Enabled).
      Figure : HP Touch Screen Configuration window
       Image of HP Touch Screen Configuration window
    5. Click Save, and then click Close.
  6. Restart the computer (again).
    Press the screen to see if it responds. If not, continue.
    note:
    After enabling Touch Screen Sound, you can press the screen just after the computer starts. When the touch screen is pressed, a soft audible noise should be heard. If a sound is heard when the touch screen is pressed, the touch screen hardware is functional and the problem is probably related to calibration and software. If no sound is heard when the touch screen is pressed, the touch screen hardware might require service.
  7. Calibrate the TouchScreen using the following steps:
    1. Find a pencil that has a clean eraser on one end.
    2. Press the Scroll Lock key on the keyboard 5 times.
    3. Touch anywhere on the screen and the mouse pointer moves to the upper left of the screen.
    4. Gently touch the eraser to the mouse pointer and hold it until a beep is heard - about one second.
    5. Release the eraser and the mouse pointer travels to another area of the screen.
    6. Continue touching the eraser to the mouse pointer and releasing it until the mouse pointer moves to the center of the screen.
    Press the screen to see if it responds. If not, continue.
  8. If the touch screen still does not work, use Microsoft System Restore to restore the system to a time when it was working. If the touch screen never worked, skip this step.
    Press the screen to see if it responds. If not, continue.
  9. If the touch screen still does not work, use HP System Recovery to restore the system to its original system configuration.
    Press the screen to see if it responds. If not, continue.
  10. If the touch screen still does not work, the computer should be serviced.

A touch occurs next to the point touched, not at the point of touch

If you suspect that touch functionality is not working correctly, go to the Windows desktop and press the wallpaper background. If the mouse pointer moves directly under the tip of your finger, touch functionality is working correctly. If the mouse pointer moves more than 1.3 centimeters (.5 inch) away from the tip of your finger, you should clean and calibrate the screen. To do so, with the computer off, spray glass cleaner onto a soft, damp cloth and gently wipe the screen to remove dirt and smudges. Do not spray cleaner directly onto the screen and give special attention to the upper left and right corners of the screen. To calibrate the screen, see Calibrating the Screen in Vista (in English).

Mouse pointer moves to upper left of screen regardless of where the screen is touched

The Scroll Lock key was pressed 5 times causing a touch calibration session to start. To fix, finish the calibration:
  1. Press anywhere on the screen and the mouse pointer moves to the upper left.
  2. Press and hold over the mouse pointer until a beep is heard.
  3. Release your finger and the mouse pointer travels to another area of the screen.
  4. Continue pressing and releasing over the mouse pointer until the mouse pointer moves to the center of the screen.

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