Hollywood

WHAT DO IDO?

NOW WHEN MY NAV DISCS ARE PUT IN THEY ARE NOT RECOGNIZED AND GIVES ME AN ERROR ON READING THEM. I HAVE NOT DONE ANYTHING DIFFERENT. IT JUST STOPPED READING BOTH EAST AND WEST DICS. THE MAP WILL NOT EVEN COME UP. IT SAYS "PLEASE INSERT THE APPROPRIATE DICS". HOW AND WHAT DO I NEED TO DO TO FIX THIS PROBLEM? I RELY ON MY NAV BECAUSE I TRAVEL.

can someone help me on this? Maybe send it by e-mail?