My Navigon 7100 doesn't turn on! It does get charged though...

The battery can be replaced but it will require you to remove the old one and find a matching voltage and sized battery on ebay. you will have to change the connector to the one off the original battery pack.
It has been a while since i have done one of this model but it can be done.

I had the same problem and this fixed it: Connect the navigon to your computer and go into the files directory and create 3 new empty folders, as follows: (You may want to back up your navigon 1st) After i created these empty folders, I was able to go into settings and turn Stree names on

Create these empty folders within MN6\sound folder.
Celine_67_tts
Isabela_22_tts
Sarah_21_tts

Activation cord is in the freshmaps activation card that comes with purchas of device.It is on the back of the card remove plastc with nail and you will get 15 digits number in 3block with 5 digits each.

you get repair or get device wihout sd card.

use internet exporer as web and don't use firefox or the other.

I have put solution to fatal application error try that solution us IE as web brouser.

you have to use cable comes with it.if you use other cable than it want'charge and let you go in for map while driving.

Try holding the power button while plugging it in. Also try holding the power button while wiggling a mini screwdriver in the reset hole

your battery is gone requires new one.

I solved this problem.

The backup is just a copy of the files on the SD card. I made one a couple of months ago when everything was working ok. I tried to erase the SD card so I could restore the backup manually. I ran into an error with a SD card file that wouldn't erase. I ended up formatting the SD card then copying the old backup files to it. That took care of the problem and now the Navigon works the way it's supposed to.