I'm am currently having a very similar problem. Our Touchsmart 9100, which was working great as a kiosk before we shipped them, has now stopped responding to touch on much of the screen. Oddly, most of the lower right quadrant DOES respond to touch but the rest of screen does not. The mouse works fine.

Our Kiosk locations are somewhat friendlier: inside the buildings, in a foyer area.

We've tried several fix-attempts suggested by various phone help techs including reinstalling the "NextWindow 1950 Touch Screen" device in device manager, trying it in Safe mode and a few other minor things. Nothing helped. HP help final asked us to reinstall the OS, and if that does not work, they will RMA it...

Any help would be appreciated to solve this (or future instances, since we have a lot of these and I'm guessing this will happen again...) without having to reinstall the OS.

Thanks

When troubleshooting, keep in mind that the little chirps of touch recognition are generated by a little piezoelectric speaker on the touch sensor board, if you can't hear the chirps it's not going to get passed on to the OS.

Diane

I can't speak with 100% accuracy on the 9100, but it's just the commercial version of the consumer hardware. In all the IQ series when you go to touch the screen, as soon as the sensor picks up your finger, they make a very quiet chirp.

That chirp does not come from the OS or the speakers, it's actually coming from a small speaker on the touch controller board. That's why I'm saying that if you're not hearing the chirp then the touch board isn't responding, and if that doesn't see the touch, then it can't pass it via USB to the OS. I know the DX9000 was the same as the IQ5xx, and I'm assuming the DX9100 is the 300/600 equivalent, if they changed the touch controller board then I may be off base.