steering wheel stays unlocked and car wont start?

What is your question?

The ignition will turn with the key but its acting like it has no battery power to it. When the key is turned off, the steering wheel stays unlocked and turns. It won't even roll start. I've been told it could be the switch, or the lock cylinder, or the harness could be bad. can someone please tell me which it is or what it really is? Thanks.