CUDA 7.5 not seeing MS Visual Studio 2015 Professional already installed, installation incomplete

CUDA 7.5 not seeing MS Visual Studio Professional already installed.

Error message says MS Visual Studio was not found.
The installation completes and as expected within Visual Studio I can’t find the CUDA compiler.

My goal is to write some CUDA programs and compile locally on my laptop.

I have Windows 8.1 with GeForce 860M

That’s correct, VS 2015 is not supported. Supported configurations are listed in the installation guide.

http://docs.nvidia.com/cuda/cuda-installation-guide-microsoft-windows/index.html#abstract