I could be wrong but in my experience touch screens are very sensitive to any kind of smudges smears etc or device manager isnt calibrated correctly so
1 get yourself a good screen cleaner and of course clean your screen dry it etc
2 go to start click on control panel go to system then device manager under monitors etc click scan for changes devices etc
then apply ok go to display properties click identify and see what comes up then detect monitor type see what comes up then go back to start left click on computer right click on os system go to properties first do disk clean then go to disk check click on repair all errors click start disk check it will usually ask for a set schedule click ok reboot computer let disk check run and fix problems
hope these ideas help fix your problem
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if the switch contact are not good then it will not trigger the processor to switch on the waveguides.Since the table turns without a program start and If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean,solder and reset the board.
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