I had the same problem recently with FARCRY on my pc. I bought the game got home, put in the disk, and blam,,,,,, nothing!
Looked everywhere, and eventually found that my particular make of disk drive was not compatible with that game! LG GDR-8160b.
Cut my losses and bought another drive (samsung), and ta-da!! no problems since.
That could be your problem, as i also tried taking the game back,,,,, twice! LOL
The shop put it in their pc and it loaded straight away.
Just a thought.
Rick.
PS The drive worked fine with everything else i had, including other games, so i have kept it in the system.