Alright, let me make this story as short as possible while giving all of the info. So the night (and every night before it) that I got Mob of the Dead for COD my Xbox worked fine. The next morning, my friend put his hard drive in to my Xbox to transfer his profile to a USB flash drive and now my Xbox runs painfully slow if it even runs at all. Either it takes 10+ minutes to load up a profile, dashboard, game ect. or it just straight up doesn't load. Also, when I do go to load something, the disc drive doesn't spin up like it used to. One more symptom is an occasional (but severe) frame rate drop which used to be very minor, if even noticeable, that I can only compare to looking at a painting at a museum. Is this an easy problem to solve or should I just take this thing to Game Stop? Any help I can get would be appreciated. Thank you in advance.