For some weird reason, it's not possible to use some discrete notebook GPUs with DirectX 9 games. One of us has the same problem with his notebook, and we haven't yet found a way to make it work properly. According to what I was able to find on the web, Nvidia is to blame.
You should try some more fiddling with Nvidia Control Panel, but if it won't help, it is not much we can do about it. I'd suggest you play on desktop.