We can help people make backup copies of games that they own. But we cannot help if all you have done is downloaded an ISO of a game that you have no legal right to use.
If you have purchased a game and received it as a downloaded ISO, I suggest you talk to the people you purchased it from. Personally I don’t know if these are even available, since I get downloaded games through Steam (a legal avenue for downloading games).
In any case, without knowing the exact game and the protection used on it, we won’t be able to help anyway.