I have a Xbox that was modded almost a year and woked fine until a few weeks ago. The problem is that it will lunch a game but you can not see it (black screen) but you can hear it. No flashing lights it seems to work although no video. Turned off mod chip but still no video. Can anybody tell me what is wrong or what I can do other than buying a new motherboard.
If you have any friends that have one, see if you can borrow their cord. The one with the audio/video hook ups. That way you can rule that out as the problem. Or possible solve it.