God, this is killing me. First, I should point out, if I haven't already, that the games actually start working. I'll see the proper developer/publisher logos and then, about 10 seconds in or so the Xbox locks up. It only happens on some of the games. The others can be played normally for hours at a time with no trouble.
I've tried:
- New and different version BIOS
- Updated to the latest built of XBMC (though the games act the same when using Avalaunch so . . . )
- Deleted the contents of the UDATA and TDATA folders
- Deleted the non-working games and loaded fresh versions back onto the Xbox (definitely in different physical locations on the hard drive platters)
- Copied the C:,E:,X:,Y:, and Z: drives from my working Xbox to my brother's screwy one
What could possibly be causing this? All these games work fine on my Xbox and, until recently, worked fine on my brother's. It seems like I've covered everything. I'm indebted to anyone who can steer me in the right direction.