My friend and I just installed his x3 yesterday... went smoothly. Flashed the bios, loaded avalaunch, i unlocked the harddrive as u can tell with the #5. Suddenly, x3 led powered off after installing xbox media center and wouldn't let me download anymore programs (ie. config magic, etc.). I turn off the box, x3 won't power on, and i get the unlocked hdd screen. checked solder points, look fine... any ideas?