WARREN, Mich. (AP) - Crews are working to restore power to hundreds of thousands of Michigan customers who lost electrical service due to freezing rain and high winds.Utilities say more than a quarter-million didn't have service Monday morning. Dozens of schools without power were closed.DTE Energy says about 250,000 of its customers were without power and it expects 90 percent of its 370,000 affected customers to have service by the end of Tuesday.