I have backtrack 5r1,
installed on usb... when I plug it in usb,,,, more than five veses he changes the theme

look ---> http://i.imgur.com/6pab5.jpg
look---> http://i.imgur.com/n9lkx.jpg

already formatted my usb numerous times,,, always of the same error
did not want to reformat.....
how can I put the original back thema?????
or tell me what I'm doing wrong?