I won a GO 630 in a Christmas raffle. I cant even get past the setup screens because the touchscreen calibration is so out of alignment. The very first screen, where it asks what my language is, it is impossible for me to hit English. Basically, if I tap the very top of the screen, I can hit whatever is at the very bottom. Things that aren't at the bottom I can't hit at all. I thought maybe a firmware update would help or something, but TomTom Home doesn't even see the device. Windows sees it, and lets me browse it, but Home just acts like it is not there. Any ideas of how I can salvage this thing? Since I won it, I don't have the receipt or I would just send it back.