will play cd and dvd discs but not game discs

"Have you replaced anything on the xbox, or done any other work to it? If you replaced the original DVD drive with another one that is not ""married"" to the motherboard, it will not play game discs. The motherboard and DVD drive share a key, it is different for every system. If the DVD drive was replaced, here's a write-up that gives you some options on how to put the original key on your new DVD drive so that you can play games on it again.

http://hardandsoftgaming.wordpress.com/2..."

i found out .thats if you havent changed any thing .that theres two small scews on the back of the lazer give them a small turn counter clock wise just a hair . and that did the trick for me it was ez ..and it shock the #^^# out of me. now my son can play again ..just a stanger Gary

;) http://www.youtube.com/watch?v=REzASFzhM...

Thankyou so much!!! Fixed my Xbox easily!!!