Hmm, I just got this today and I'm having problems. The demo worked fine but this is going crazy. Firstly the lighting was screwed when he wakes up in that building the walls were illuminous yellow!!! after changing a few gfx options higher and lower, I have now lost all textures and everything is blue. Noticing that Nvidia have a new set of drivers (1st of april release and it hasn't been that long since I got the 53.03 ones) I've installed them and there's no change.
I'm now downloading the FC 1.1 patch but I have little faith, has anybody else had similar probs.
BTW my GFX card is Geforce 4 MX 440 64MB (yeah I know its crap, but heck the demo looked and played good!)