Happened to a friend of mine with the FAFSA. Her parents didn't want her to go to college, so provided no money and even refused to fill out the FAFSA. Fortunately she was able to work something out with the senior administration of one of the colleges she was admitted to.

I understand why they take parents income into account; it makes sense for the majority, but it's pretty impressive how badly your parents can legally screw over your life after you are legally an adult.