This has happened in the past 4 days. I thought because gears is an old disc it needed replacing. I have a new one, but it comes up with the same issues. The splash screen appears then black. Anyone else experienced this. My Xbox is an Elite.
This seems to be a profile corruption but I need more help from XBOX support on this.
try clear cache if doesnt work delete and recovery gamertag :)
I've had a few problems with corrupt game saves when I moved between 2 consoles which had different versions of the game. (That is, the second console had not downloaded the title update yet)
I had to start over and some of my achievements are still screwy.
Back up you game save to a USB, then delete it. Then see if starting over fixes your problem. If so, you're doomed to start over!