I just bought Fallout 3 earlier today (I have played it before along with New Vegas on console, just wanted it on my PC now that I got a new one). I installed it and all things necessary to play it. Everything was all good. I pressed launch, the little menu popped up and I pressed play, but after that nothing happens. The game isn't starting at all. I have tried multiple times with no success. Is there any help that can be provided for this issue?

Does it have something to do with the activation key? I highly doubt it but I don't see what else could be the problem. My computer is very capable of running it.