I'm having the same problem. I have an Area 51/Max Force. I bought it from an arcade that was closing. It didnt work... one problen was the hard drive. I put a new HD in but now I get the REAM error. The screen comes up, I choose the game I want, then the mission, then sometimes it will let me shoot a few "bad guys" then the error code comes up, usually after picking the mission the error code comes up. when it does, I can hit the start button 3 times and the game select menu comes back up (to chose Area 51 or Max force) I have taken out and reinserted the 4 security chips incase there was a bad connection. I havent found the problem yet