As a technician, you come across problems that make you just hit your head agaisnt a wall. Recently I had one of those problems where I had an HP IQ804 touch screen where the mouse would not respond correctly to where I touch at all. I’d say it was off by about 4-7 cm. I could not even click the start button because the mouse would not track my finger.
Now when I tried to do the calibration, it would not work as it doesn’t exactly calibrate the mouse more so how big your finger is. So that got me into a head against the wall scenario. While doing so I starting to poke the num lock key to look at the light flash and then I tried to pressing caps lock, num lock , and scroll lock to see if i get a pattern. On the 5th time I hi scroll lock the mouse moved.
After much step repeating and experimenting I realized that by pressing scroll lock 5 times put the screen into the ACTUAL calibration mode. So here is what I did:
- Press scroll lock 5 times fast.
- Get a small flat object like the back of a screw bit or pen top.
- Tap and hold DIRECTLY on the mouse pointer for about 2 seconds and release.
- The mouse will move just repeat those steps till the mouse goes back to the center of the screen
- Done! Your touch screen is now calibrated.
All that’s left is to run the other “calibration” program from control panel so your screen knows how big your finger is.