Hi, I really hope someone can help me it's midnight here and i'm starting to feel desperate!

I've been searching the forums for weeks now and while i've found loads of information without posting myself, i'm going crazy with this one issue.
I've downloaded films and tv shows, which is great and i'm very happy. But i would really like to watch them on my tv. So i went out and bought the scart to go from laptop to tv and all that works fine... EXCEPT.... Everything is in black and white, not just the film also the desktop.
I've searched and searched the web looking for answers and this is my last hope. I downloaded nvidia, saw that on some sites but i don't even know what it does. Arrghh
Please help!
Tried forgeting that idea and decided to try burning- another 48 hours of problems.
Please help.