Had loads of issues with my tomtom, For me a format and re-install worked. Card or internal memory? I got a bigger card for starters and then done format through tom tom panel.
My Garmin Nuvi has that information but it's buried deep.and took a lot of steps to find. Google Nuvi 1300 for a user manual in pdf format. i.e ( Garmin Nuvi 1300 manual pdf)