Do not know enough about setting it
SOURCE: Broken Garmin GPS Nuvi 300 Touch Screen
I know of this site where your screen can be replaced.
http://www.sharc.net/nuvi_LCD_repair.htm
SOURCE: My Garmin Nuvi 710 GPS doesn't switch on
Connect your Nuvi to a PC using a USB and then hold the switch to the left for 15 seconds. It should then power up after a soft reset
SOURCE: Garmin Nuvi Doesn't turn on
Try resetting the unit. The procedure can be found here:
http://www.sharc.net/discus/messages/6/313.html?1268661443
- Jim
SOURCE: locked out of Garmin nuvi
To perform a Master Reset on the nuvi 200, 205, 465, 500, 600,
700, 705, 1200,1300,1400 or 1600 series device:
Note: A master
reset will erase all waypoints or favorites and will restore
your unit to the default factory settings. If you would like to back up
your favorites you can find instructions to do so here.
The
device will automatically reset. Follow the on screen prompts then
place your device in an area with a clear view of the sky until it
acquires satellites.
***Don't forget to VOTE for the guys who take an interest in helping!
SOURCE: nuvi® 255W Car GPS Receiver: The screen of my Garmin nuvi 255w GPS is white and...
Press and hold the lower right corner - then see second picture
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