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Re: Garmin Nuvi 750 GPS
Have you tried this?
You can try this step that I found. If you tried loading other mapas try this.
You will need to erase a file from the units memory. Connect your GPS system to your computer; go to start then ‘My Computer’, and double click on your device file (mass storage system), there you will see a folder named ‘Garmin’. In this folder are several different files, look for file named gmapsupp.img. Right hand click on this file and delete as this file is causing the maps to lock.
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Question: What should I do if my Garmin nuvi or zumo displays the message "No Detailed Maps Found That Support Routing" or "No Map Data Available?"
The "No Detailed Maps Found That Support Routing" or "No Map Data Available" message may appear on your device for the following reasons:
The GPS device is missing it's unlock code
The maps on the GPS device have been disabled
To determine the cause of the message, touch the screen until the message "No Detailed Maps Found That Support Routing" disappears.
If you see a "Can't Unlock Maps" message following this error, remove any microSD / SD cards in the device and follow the instructions below for Retrieving your unlock codes followed by the instructions for Creating an unlock file
If you do not get the Can't Unlock Maps message then skip to the instructions for Enabling maps on the GPS device
2:Touch the tools icon on the main screen. The tools icon is represented
by a wrench surrounded by a blue circle.
3:Touch the "Settings" icon which appears as a wrench.
4:Push the "Restore" button at the bottom of the screen. A confirmation
message will appear asking to confirm restoring the Nuvi to factory
settings. Push yes to restore the factory settings
Try this for hard reset .
Turn off Garmin device. Press down on bottom right corner of the
touchscreen [ Don't let go ] , and then power on the GPS unit. You
should be prompted whether do you really want to erase all user data, or
asked if do you really want to start up in maintenance mode. Press
“Yes” to reset (warning: all data will be erased and lost, so backup
before proceeding) or enter maintenance mode.
it sound like someone has "unticked" maps go to settings then maps and map info and look for the screen that says city navigator, and tick box that should work unless someone has attached to pc and wiped maps
When you connect the 750 to a computer it goes into data mode and the screen shows only the connected to PC icon. Let it charge for a few hours and then disconnect it from your computer and it will come up in Navigation mode,