so when i power up my elite HDI sometimes the lorance map pops up and sometimes the navionics loads fine... when it loads the lowrance map and i go to select the navionics card my chart screen freezes up all white. (BTW when i do this Navionics card is already selected even though navionic map is not being displayed) my 2D and downscan still works fine. but in order to get my chart back up have to power cycle the unit? anyone know what i am doing wrong.. figure its user error. also i have updated to most resent software update as well.