My Via 1605 touchscreen is suddenly acting strange. If I click on the right side of the screen, only different buttons on the left are acitivated. If I click on buttons on the left, the buttons on the left are activated normally.. I was trying to calibrate the screen but when I connect the device to my computer to adjust the cal.txt file, the GPS doesn't show up in Windows explorer and I can't see the files on the GPS. I need help!