Hi all. Hoping someone can help. My partner's MediaNav essentially just isn't working. The system appears to be continually resetting itself. Essentially this has been going on a while. We had a new battery put in the car yesterday and this got us to the activation radio code stage (this wasn't appearing before, just reboot after reboot) but the screen is receptive for literally a few seconds then won't work. I tried putting the code in really quickly and pressing 'ok' but then nothing, and it just reboots again and again continuously. Does anyone know any solution for this?! Thanks.