Ive had my system for more than a year and never had a problem like this. I was on netflix one day when all of a sudden it froze and the power button which was once green turned red. since then when ever i turn on the system it wont even start up, it will turn the power button green for a while, show nothing on the screen and finally turn red. One time this happen the screen actually displayed something for once, first it said E79 error code then the last time it happened it said E71 error code. I've read that these two error codes have something to do with the hard drive BUT the thing is I havent had a hard drive in their since i could remember cause i left it in a friends xbox and never got it back. Its worked perfectly fine without it but now im getting these error codes and cant play my games :/ heeeeeelp!!