I have been using an older elo touchscreen controller + Surface Wave overlay. The setup worked fine since day one, but now i am having some trouble with it.

It seems that the touchscreen has stopped working (not entirely) on my car computer system. I say not entirely stopped working, because the computer and controller still register the fact that I am touching the overlay, but it's NOT relocating the mouse pointer. In other words, the controller's LED reads OK, the computer beeps when recieving a 'touch', the alignment software even moves to the next target, but the mouse never moves!

The steup works on other systems, and i even formatted and reinsalled the car PC, and the same thing happened!!

Any ideas?