2002 Honda Civic LX.
While driving, I heard a thunk and thought I had run over some road debris, but didn't think any more about it until I got home and went to put up the window. It went up to almost all the way, then slid down. Now it won't work at all. I tried raising it manually, but it just slides back down. When pressing up or down on the door control button it makes a whirring noise for about 3 seconds, then stops. Any idea what's wrong or how much it would cost to repair? I an an older woman and can't do car repairs.