Whenever I try to play Starwars Battlefront off of the HDD the game will lock up at the Dolby Digital screen and when trying to play Rainbow Six 3 if you try to set up a profile the screen will go back to the "press start button" screen and when you hit start or A it will just go back to the "press start button" screen. I've deleted the profile files and recopied the games and they continue to do this. Has anyone had this problem and know how to fix it?

this has nothing to do with unleashx

Go to xbox backups forum. See if there's a patch for those games, check the stickied posts for steps to take to trouble shoot backup game troubles.