well mark, and everyone else having this problem.. asfter lots and ltos of reserach, and downgrading ect. and still finding it locking up.. and after having it lock up in my car today for the first time.. and reseting the playing to find the No Hard Disk Found, Contact Support Message, i came to the realizations that i got a bad hard drive cable.. or so i tihnk.. so im going to contact support and ask them if i can just do it myself, dont feel liek shipping it off.. seems like such a pain