So last week sometime I turned on my car and heard knocking. Eventually I found out my belt was completely gone. My air stopped blowing cold and I had power steering problems. My boyfriend put the serpentine belt on but the power steering didn't get fixed, the light for my AC I not working, and now my windshield wipers aren't working.i thought I needed to change the fuse and that didn't help anything. Does anyone have any idea what could be wrong?