I recently purchased a 320 gb xbox. It has been running fine for the last month and a half I've owed it untill yesterday. I was online playing mw3 with the console sitting vertical, I bumped the unit and it fell to horizontal while the disc was still spinning. I took out the disc and shut down system, when I tried to play disc again it wasnt recognized. I tried another game and it worked fine. Needless to say the MW3 disc is scratched and wont play, this is where my problem gets interesting. I continued to play other games in which everthing was normal, i finished and shut off console. The next time i turned it on it no longer recognizes a hard drive and im stuck at login page . I have taken drive out and reinserted with noi luck, nothing seems to work. I just ordered a new hard drive from microsoft and it better be the solution to my problem for 120 bucks ....not to mention the 40 for a new mw3 game. If thres any info you could give me i would appreciate it. BTW I already smashed the old hard drive in frustration (bad idea) then relized i couldve sent it in.