My Xbox 360 will not play specific games. Out of the 30+ games I have, it won't play "Turning Point: Fall of Liberty" and VERY rarely plays "GTA IV." I currently have my Xbox taken apart and can see the laser as it tries to read these games. The laser turns on while the disc isn't spinning, but when the laser turns off the disc spins for about 1 second and stops. The laser then comes back on for a second and turns off again. What makes it weirder is that with most of my other games it "catches" and plays the games automatically. Can anyone help me out here?