Error Installing on Windows 10 with cmake

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I am trying to install OpenCV on Windows 10, and get an error when running cmake, text below:

Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler:  
Build flags: 
Id flags:  

The output was:
The system cannot find the file specified


Compiling the C compiler identification source file "CMakeCCompilerId.c" failed.
Compiler:  
Build flags: 
Id flags:  

The output was:
The system cannot find the file specified

I am using Visual Studio 2015. I'm not sure exactly what Cmake does, I believe it compiles all the OpenCV modules into a .dll? Is it possible to just use precompiled libraries, or just include the OpenCV modules I want to use in my code? I am interested in computer vision, not necessarily the intimate details of software development systems, and want the simplest way to get OpenCV. Thanks for any help you can provide.