I can give you the following suggestion.
The touchscreen will recognize your
stylus tapping if you simultaneously
have any of the keyboard buttons pressed (except 'Clear').
Once you see the whole menu (after screen
calibration and brightness settings) press
Clear than Exe than Clear and the screen
should be touch sensitive again.
Hope this helps.
I have same problem, and was searching in enternet and read some solution, but not found any way to fix my problem.
Please help me.
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I have the same problem.i can select the right points of startup.and can't get to main menu or connect it to PC
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