Recently I purchased this Xbox knowing it had e74 issues and thought I could fix it myself. I purchased the Xbox 360, 3 power bricks, 4 ring of light boards, and a case opening tool for free. All I had to do was pay shipping which was only $15. I read that the problem is that it's a cold solder or something like that and it's a possible problem with the GPU or Hana Chip. Could anybody help me figure out what I need to do? Can provide pictures if needed.