Vista only shows black and white color problem! I need a fix

I was gaming the other day and my vista 32bit somehow only displays only black,white,gray colors now. I tried to find a fix for this but i can't find it. I have asked some people online and they say its my graphics card. I can run all my games smoothly but without any colors.

Any help would be nice

I would suggest trying another monitor to see if that's the cause.