Hitachi DZBX35A DVD Camcorder "letters husband" Questions

Screen will not stop displaying "disc access" Everytime I turn on the camcorder, the screen displays the phrase "disc access." I tried taking the disc out, but it won't even let me open the thing that

My husband has 'lost' all our recordings on our video camcorder. an they be recovered? He thinks he tried to delete 1 recording but they've all gone. They were saved on a memory card. ...