UPDATE: TensorFlow supports Python 3.6 on Windows since version 1.2.0 (see the release notes)
TensorFlow only supports Python 3.5 64-bit as of now. Support for Python 3.6 is a work in progress and you can track it here as well as chime in the discussion.
The only alternative to use Python 3.6 with TensorFlow on Windows currently is building TF from source.
If you don't want to uninstall your Anaconda distribution for Python 3.6 and install a previous release you can create a conda environment for Python=3.5 as in:
conda create --name tensorflow python=3.5
activate tensorflow
pip install tensorflow-gpu
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