I'm trying to copy games that my cousin has. All the games he has works on his xbox and some doesn't work on mine. I try to copy it but after several files transfer, it starts to not transfer any files at all. It would show a 19.23mb file and would show the transfer bar as 20.43mb at 0%. I also noticed that it lags or slows(almost freezes) the xbox. Can anyone help how to fix this kind of reading problem...His disc's are from Nexxtech. Some games will load, but loading screen will freeze, or will just say disc is damaged or dirty. I tried to clean the lens but it didn't do anything. can someone help me pls! Sorry for the long post.