IF you are installing the GPU version please make sure you have following on your system:
CUDA® Toolkit 9.0. For details, see NVIDIA's documentation Ensure
that you append the relevant Cuda pathnames to the %PATH% environment
variable as described in the NVIDIA documentation.
The NVIDIA drivers associated with CUDA Toolkit 9.0.
cuDNN v7.0. For details, see NVIDIA's documentation. Note that cuDNN
is typically installed in a different location from the other CUDA
DLLs. Ensure that you add the directory where you installed the cuDNN
DLL to your %PATH% environment variable.
GPU card with CUDA Compute Capability 3.0 or higher for building from
source and 3.5 or higher for our binaries. See NVIDIA documentation
for a list of supported GPU cards.