Last month they released tensor-flow comparability with windows. Looking at the docs I've installed python 3.6 and run
pip install tensorflow-gpu
but it doesn't find it and therefore doesn't install it.
could not find a version that satisfies the requirements tensorflow-gpu(from versions)
Am I missing something basic? How can I fix or circumvent this?

pip install --upgrade https://storage.googleapis.com/tensorflow/windows/gpu/tensorflow_gpu-0.12.0-cp35-cp35m-win_amd64.whl