GPS problem

[Magical24]

my gps sometime resets and then tells me to insert a cd into the gps but theres one already in there

so could it be that the disk is faulty or the actually gps unit in the trunk is not reading the disk

the worst part is i will be driving then all of my music will go off as the screan goes black and then starts up a few seconds after

its a 02 330ci

thanks for any suggestions

[Magical24]

bump for not getting one reply