When I turn on my Start 50, I hear the drums, then get the picture of battery for about 15 seconds, then get the Legal Notice. This is normal, but the now the "I Agree" button does not work. It acts like the touch screen is not working. After about a minute the legal notice disappears and the process starts over again. This will go on forever until I turn the device off. I may have messed up the file structure on the device, possibly deleting a wrong file, so it may need to have operating files reloaded? How to solve this issue?