Screen orientation. My PalmVx has lost its screen orientation so that I cannot get the system to

Question

My PalmVx has lost its screen orientation so that I cannot get the system to respond to touching the screen.  Even pressing the restart button on th eback only takes me back to the set up screen that I can't access becasue the screen isn;t working - any tips gratefully received!The touch screen no longer works. I, too, have used the reset button but had no succes. Unit is fully charged, functions come up, but I cannot enter any data or get response from the screen.