The device comes on with a picture of a hard drive in the lower botton lelf side and a flashing Red X in almost the center. Will not go to any other function. When i pluged it into the computer, the TomTom contents come up and a message that this unit is not supported by "MY DRIVE" and to use TomTom Home to manage the device. At first it said the there was an error on the drive and the TOMTOM needed to be scanned in order to fix the problem. I did so and the error left. But when you unplug it from the computer and turn it on, the flashing red x and the picture of a hard drive still there. Please advise.