Backtrack 5 R3 start up?

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http://www.backtrack-linux.org – Hello, I downloaded Bactrack 5 R3 , installed it via the the http://www.backtrack-linux.org/wiki/..._USB_Installer however when I load up from the usb - it goes through everything then comes up with a black screen (with a lot of writing on it) and just says root> (like in command prompt) . Also tried doing it via universal usb installer - still the same - absolute no go . Any help ? Im running windows 7 64 bit downloading the ISO and following the steps to the "." Thanks for any help - I really want to get it working. (HowTos)