Hello!
I am Andy and I will be glad to help you out with your issue today. Please Reply to me with doubts / questions till you are 100% satisfied.

First do an update of your software [free].

The preferred way to update the Unit Software in a Garmin device is by using WebUpdater.

To download WebUpdater click here.

WebUpdater updates the applicable Garmin device with the most current software version available. After updating the device take it to open sky for 15mins atleast.

Note: A master reset will erase all waypoints or favorites and will restore your unit to the default factory settings.

1. Start with the unit OFF and unplugged from power
2. Touch and hold the lower right corner of the screen with an index finger or the eraser end of a pencil
3. Continue touching and holding the lower right hand corner of the screen then power the unit ON
4. Release the power button when the device powers ON
   • You will see a new message: Do you really want to erase all user data?
5. Remove your finger from the touchscreen when this message displays
6. Touch Yes

Hi

Please try this.

To perform a Master Reset on the your nuvi, follow these steps:

1. Start with the device OFF and unplugged from the power source.
2. Use your index finger to press and hold the top right corner of the touchscreen.
3. Power the device ON while continuing to press and hold your finger to the lower left (or top right) corner of the touchscreen.
4. After the device powers ON, you will see the message: Do you really want to erase all user data?
5. When this message displays, remove your finger from the top right of the touchscreen and touch Yes.
6. The device will now go through the Reset.
7. Follow the onscreen instructions to set up your nüvi.

Hi,

Great. Please let me know result, I am waiting !

Let me know result via REPLY TO EXPERT button

Andy