I was playing NHL 2K5 last night and right before I went on the power play my XBOX just froze. I don't know what happened. I turned it off and turned it back on and it still would not play. I can hear the disc trying to spin and the circle of light that is around the eject button is flashing red and green, What does this mean and how do I fix it??? I cannot find my manual. Any help would be much appreciated.