hey guys it seems i found a solution to get NVIDIA mobile chip work on SC4. i repeat its mobile 970m. it was simple. i went to wine3d3 site. downloaded their wrapper, copied DX7 files in my app folder and booommmm! im sure my laptope uses nvidia form 1.performance 2.dedicated nvidia led and 3. visuals. after many years of agony, im now enjoying SC4. and i cannot believe it.