My brother's XBox will not play any of his games, but plays movies, Cd's etc. Basically, it's the old, infamous "open tray" error that people seemed to get back in the day. Since the XBox is old, it's way past its warranty, and it would cost him over $100 to get it fixed. I decided to give it a stab and fix it myself. I came to the conclusion that I should replace the drive, instead of playing with the potentiometer on the laser (the Toshiba/Samsung TS-H943A has a different laser, and the knobs are very difficult to work with). So I ordered a new drive and installed it. When I put a game in the drive, it acknowledges that it has a game in it (instead of just getting the open tray error), but doesn't play the game at all. When I attempt to play the game, the screen goes black as if it's about to start up, then goes right back to the home screen. Any ideas, anyone?