I have had the maps changed from UK to Thai maps about two months ago and every thing has been working OK untill two days ago and all that it displays now is the first "page" saying Garmin I can not get anything else on it,any ideas what could be wrong with it.

You need to reset your nuvi 13XX by pressing and holding the Power button until the main menu is displayed. If that does not solve the problem then you should reboot the unit, which will erase all user data by restoring the factory original settings.

You need to reset your nuvi 13XX by pressing and holding the Power button until the main menu is displayed. If that does not solve the problem then you should reboot the unit, which will erase all user data by restoring the factory original settings.

Thank you very much for your help,all working OK now.

You need to reset your nuvi 13XX by pressing and holding the Power button until the main menu is displayed. If that does not solve the problem then you should reboot the unit, which will erase all user data by restoring the factory original settings.

Thank you very much for your help,all working OK now.

If the problem occurs again you may want to check for an update to your nuvi 13XX software. Connect the nuvi 13XX to your computer via USB cable and go to the Garmin website, register your GPS, then follow directions to update software. NOTE: Not to be used for Thailand purchased units, they use a special Thai OS. You did mention that you originally had a UK map.