Hello, again, railrider1972.

We don't have many clues to help you with.
Did your USB ever work right? When was this? (K!6.4.4 came out in Feb 2011)
Did you make a copy of knoppix-data before things went bad?
Do you know how to rejuvenate your set-up using knoppix-data?
What were you doing when things went from good to bad (if ever)?
Where does your DVD comment fit here, anyway?