Ive tryed and failed to get passed I agree Screen / Connect to computer as i cant touch it or its not responding to touch.
Ive tried Holding reset button for 30 secs.
Going from 9.465 to 8.351
Calib.txt files.
Basic dust removal from screen ( Seems clean and has always been in a case )
Tomtom Clear flash
Not sure where to go now and my tomtom is useless.