Can't open backtrack 5 with default password
 

Ive downloaded bt5 to a live usb and open it with eunbooten
i type login
root
toor

when i go type in toor
it just blinks and never moves
i hit enter and invalid pasword pops up.

I cant get in it, help.
As you can tell im new to this.
I want to learn.

-try with another version of backtrack
-maybe you are using caps lock?