Lost cd key

[quickfixthis]

You could contacted MS "Microsoft" and see if you can send them your unreadable Original CD. Thats what you tell them. That the ORIGINAL that you own is not working anymore. At that point request a cd key also. See what they have to say about it anyway As that would be your only hope of a new key.

My Halo came in a Card Board Case, and a yellow label on the back has the number on it.