Just Cause 2 ISO wont run! help!?

I got a full download of Just Cause 2 for PC and i did every update included in the setup and install. First there was a file missing so i re installed and i got the file. Now it turns on and does nothing. I watched the process activity in task maneger and the task begins, runs at minimum usage and then shuts off. why? i installed the ISO using Daemon tools lite, which worked great, but why wont it work? Am i missing something? Do i NEED to put it on a dvd-cd or can i just use a mount? my computer run windows 7, my requirements to run the game are above the recommended stats for the game. I have all 21 parts to the iso to reinstall the complete iso and i still have daemon tools lite to mount or burn to a dvd-cd. PLEASE HELP ME! I REALLY WANT THIS GAME!