I have tried back ups of my 2 games and they both boot fine but lock up at a definite point in the game which may suggest a problem with the image or the burn. I have: a 360 with 4.2a firmware and sammy drive Samsung SH-D162C with Kreon 0.81 for ripping via usb to my Acer notebook with LG GSA-4082N DVD DL writer. Verbatim x2.4 DL media Ripped using XBC, burned using Imageburn (through XBC) This should work!!! GRAW2 locks up at the first load screen and the Godfather locks up in game. All other backups and originals which I bought work fine, just these first attempts from me lock up. Any help would be GREATLY appreciated.