Linux users are as dumb as computers are, they need to be told exactly what you did and the exact result of you doing it. We are very poor at intepreting "I can't type" at any other meaning than "I don't know how to press the keys on the keyboard."
How to get good answers with your questions
You aren't using some oddball keyboard or one with some broken connections then? Nothins shows up when you type?
If so, I would edit your needed files from the rescue environment, then, since the keyboard works from that.