15%! wow, and how long would it take to restart and try again, and finally succeed?
don't worry about double posting, if you do it quick enough the forum automatically merges them into one post
I left the 360 a couple of minutes booting ("glitching") and then restarted it if i didn´t get it working. As you can imagine i ended up leaving the machine on if there was a game i wanted to play asidually.