Ok i know that the E 74 is an av cable error, and it could possibly be a 90% chance of a chip inside the av cable or the gpu. But until i can try another av cable tomorow, i just want to state some problems i've had before this error and maybe it will narrow down the true reasoning behind this. First my xbox had occasionaly on some games froze up, then recently it started just rebooting itself it would cut off and then wait 2-5 seconds and cut back on automatically. then right before this probably an hour i was playing a game and it started showing pixels and kinda messed up the screen but i could still play so i finished my game and cut it off for an hour to eat and when i cut it back on i got this error with the one red light. so does this sound like the gpu or the av cable. (crosses his fingers on hopes that it is possibly just the av cable)