Xbox 360 turns on (flashing green light only) for about a minute, and then goes to the RRoD. Error Codes produced change after each X-clamp adjustment on the GPU chip (using x-clamp fix) from E08, E09, and E10. The main reason I'm posting for help, is due to the lengthy time it takes for the green light to change to RRoD and the variation of the error code produced. Is there hope for the 360? I've tried about everything I can possibly imagine doing.