Not Reading Games

[Frontiers83]

My xbox gives me an error message when I try to load a game. Clean disk, put original Xbox game in, etc. It will play a music CD fine. Where do I start. It is one of the first units made in Mexico. Can someone help me please? Do I need to adjust the pot? thanks for any help you can post...Frontiers83 UPDATED POST:
IT IS THE ORIGINAL CD's, store bought, not copies. Also xbox has NO mod. It is factory sealed. Havent broke er open yet. THanks for any help!

[maltloaf]

i take it you mean originals.. If you still have a warranty send it back.. If not, you can try to tweak the pot

[fe_man2000]

If its not orginals - then it is chipped isnt it ?

Cheers
Ironman