There is a Reset Button on the back of your Diagun (right side, in the middle). If you notice any display issues, if the Diagun "won't read card" or if you encounter a frozen screen, take your stylus pen and press the button once to restart the unit. This should remedy 90% of those annoying technological issues.
Don't forget to calibrate your screen when the touch screen will not respond to touch!
My Launch X431 Diagun don't start. I think it don;t boot. I found 2 short movie on youtube.com posted by other people who lokk like have the same problem. My Diagun do exactly tha same. What can I do? Who can I fix it?