You are trying to setup latest PHP on Windows, and you are getting this error:
HTTP Error 500.0 – Internal Server Error
C:\YourPath\php-cgi.exe – The FastCGI process exited unexpectedly
Error Code 0xc0000135
To fix this you need to download and install very small (7MB) something called Visual C++ Redistributable – vcredist_x64.exe from here:
Hope this will save you countless hours trying to fix this error. When you downloading latest PHP from http://windows.php.net/download/ notice the side bar:
The VC11 builds require to have the Visual C++ Redistributable for Visual Studio 2012 x86 or x64 installed.