I am new to this board b/c I just joined, but I just plugged in my 360 for the very first time last night and when I turned it on, there was a single flashing red light on the bottom right side. Then a error message screen came on with error E 67?? I called customer support and after unplugging and plugging everything back in it still was giving me the same error message....then he told me to take off the hard drive and then put it back on. After I did that it worked, but this afternoon it did the same thing again. I have one of those coolers on the back of the system, and I don't know if that is doing something to it or not. Any advice would be appreciated! Thanks!