Google has announced support for tensorflow on Windows. Please follow instructions at https://developers.googleblog.com/2016/11/tensorflow-0-12-adds-support-for-windows.html. Please note CUDA8.0 is needed for GPU installation.
If you have installed the 64-bit version of Python 3.5 (either from Python.org or Anaconda), you can install TensorFlow with a single command: C:> pip install tensorflow
For GPU support, if you have CUDA 8.0 installed, you can install the following package instead: C:> pip install tensorflow-gpu