In skillet brown the chopped beef and onion. Drain; place in crockpot. Stir in salt, garlic powder, Worcestershire sauce and flour. Add water, bouillon and wine; mix well. Cover and cook on low for 2 to 3 hours. In meantime, cook macaroni per package directions. Add cooked pasta, mushrooms and sour cream to crockpot; stir to mix. Cover and cook on high for 10 to 15 minutes. From Crockery Cookery by Mable Hoffman.