Will not load map. I plug it in an it starts and will not shutdown. Just says loading maps

To update your maps, you plug connect the map to a connected computer or laptop, then you back up you maps and then you go to garmins website then select the maps, a list will come out, then you select update maps, a page will come up then you select check for updates, after clicking on that a page will load up and you will select the type of garmin you have, then it will load up the available maps, then you select the updates you want and the maps will be updated. Be sure to install the drivers on your computer before checking it.
Once you already have the driver on your computer, the moment you connect your GPS to the system, the new updates will come up then you install them and transfer to your GPS.

you'll need a mandatory firmware update

click here

I had this problem with my nuvi 1300. I'm not sure if the same procedure will work for yours, but this is what I did.
I tried holding the power button for 10-15 seconds, which rebooted the unit, but it kept getting stuck on "Loading Maps." and then shut off.
I then plugged it into the USB port of my PC, which started the unit up for data transfer purposes. I then unplugged it, and it restarted properly.

I've had this issue on my Nuvi 1300, where holding the power button for 10-15 seconds would restart the unit, but it would freeze at the "loading maps." part. I ended up plugging the unit into my PC, which started it for purposes of data transfer. I then disconnected it from the PC and it restarted properly.
Try that out and see if you have any better luck.

Select "Game Options" at the main menu, then choose the option to enable the console. Press [~] to display the console window then enter developer 1 as a command to enable cheat mode. The "Load" button will now appear. Click it and select the desired level. After the level loads, press ~ to display the console window again, then enter devmap as a command. Press ~ during game play to display the console window, then enter one of the following codes to activate the corresponding cheat function:

god ... Player invulnerability on/off
give all ... Player accrues all weapons
give ammo ... Player accrues all current weapon ammo
ufo ... Player may swim/fly through game world
noclip ... Player may clip through environment
notarget ... Player is invisible to enemy entities
moscow ... Start on the map Red Army Training
demolition ... Start on the map Demolition
decoytrenches ... Start on the map The Diversionary Raid
decoytown ... Start on the map Holding The Line
elalamein ... Start on the map El Alamein
eldaba ... Start on the map The End Of The Beginning
tankhunt ... Start on the map Repairing The Wire
trainyard ... Start on the map Railroad Station No. 1
downtown_assault ... Start on the map Downtown Assault
cityhall ... Start on the map Stalingrad City Hall
downtown_sniper ... Start on the map Comrade Sniper
libya ... Start on the map Crusader Charge
88ridge ... Start on the map 88 Ridge
toujane_ride ... Start on the map Armoured Car Escape
toujane ... Start on the map Retaking Toujane
matmata ... Start on the map Assault On Matmata
duhoc_assault ... Start on the map The Battle Of Pointe Du Hoc
duhoc_defend ... Start on the map Defending The Pointe
silotown ... Start on the map The Silo
beltot ... Start on the map Prisoners Of War
crossroads ... Start on the map The Crossroads
hill400_defend ... Start on the map The Battle For Hill 400
hill400_assault ... Start on the map Rangers Lead The Way
bergstein ... Start on the map Bergstein
breakout ... Start on the map The Brigade Box
newvillers ... Start on the map The Tiger
rhine ... Start on the map The Crossing Point

You will need to load the MapSource software on your PC then load the maps into MapSource. After the maps are loaded and unlocked you can plug your GPS into your PC with the USB cable and load the maps.

Hope this Helps.

It was the first time I loaded uppdate maps (for free, because new navigator) and then it
was blocked with the message:no maps found, when trying to start it...My last try was to put
the navigator on his usb support and opening" TomTom HOME" program, connected to "map share"
and loaded some tips, removed it "safely" from the usb connection and it showed the right
view again...Puhhh. Thanks anyway, your site gived quite som motivation.

Have a nice 2009!
Gerard

My Garmin 660 after going thru the initial start up of "loading map" it will just SHUTDOWN. I have tried to clear the data in the diagnostic menu as recomendated by Garmin support to no avail. At the start, the trouble is it will just stay in the loading map stage. Then later it begin to shutdown.

My Garmin 660 after going thru the initial start up of "loading map" it will just SHUTDOWN. I have tried to clear the data in the diagnostic menu as recomendated by Garmin support to no avail. At the start, the trouble is it will just stay in the loading map stage. Then later it begin to shutdown.

I'm about to return my Jensen NVX430BT because apparently the maps cannot be updated! The maps installed on the unit I just received are obviously outdated and there is no support from Jensen to get them updated. Too bad, this thing has it all except good directions.