The board shall determine the domicile of the decedent at the time of his or her death. This determination is final and conclusive and binds this state, and all of its judicial and administrative officials on all questions concerning the domicile of the decedent for the purpose of death taxes. If the board does not render a determination within 1 year from the time that it is fully constituted, all authority of the board ceases and the bar to court proceedings set forth in NRS 375A.635 no longer exists.