I have isolated my computers problem with some games. My computer can read CDs, but not DVDs. When I insert RTW (which is a CD), I can view the files and everything. When I insert a Family Guy DVD, it doesn't work. When I insert Far cry (which it says is a DVD disk), it can't read it. None of these things are pirated or illegal. I just got a new CD driver (the thing that loads and ejects the CDs), so I don't think that would be the problem.