title: Can't Import Tensorflow in python 3.6
body: <p>I cannot import Tensorflow. My gpu nvidia 940mx and I am using python 3.6. </p>
  
  <p>My installed packages are :
  absl-py (0.2.0)
  astor (0.6.2)
  bleach (1.5.0)
  cycler (0.10.0)
  gast (0.2.0)
  grpcio (1.11.0)
  html5lib (0.9999999)
  kiwisolver (1.0.1)
  Markdown (2.6.11)
  matplotlib (2.2.2)
  numpy (1.14.2)
  opencv-python (3.4.0.12)
  pip (9.0.3)
  protobuf (3.5.2.post1)
  pyparsing (2.2.0)
  python-dateutil (2.7.2)
  pytz (2018.4)
  setuptools (39.0.1)
  six (1.11.0)
  tensorboard (1.7.0)
  tensorflow-gpu (1.7.0)
  termcolor (1.1.0)
  Werkzeug (0.14.1)
  wheel (0.31.0)</p>
  
  <p>The error is:</p>
  
  <pre><code>import tensorflow as tf
      Traceback (most recent call last):
        File "C:\Program Files\Python36\lib\site-packages\tensorflow\python\platform\self_check.py", line 75, in preload_check
          ctypes.WinDLL(build_info.cudart_dll_name)
        File "C:\Program Files\Python36\lib\ctypes\__init__.py", line 348, in __init__
          self._handle = _dlopen(self._name, mode)
      OSError: [WinError 126] The specified module could not be found
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "C:\Program Files\Python36\lib\site-packages\tensorflow\__init__.py", line 24, in &lt;module&gt;
      from tensorflow.python import *  # pylint: disable=redefined-builtin
    File "C:\Program Files\Python36\lib\site-packages\tensorflow\python\__init__.py", line 49, in &lt;module&gt;
      from tensorflow.python import pywrap_tensorflow
    File "C:\Program Files\Python36\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 30, in &lt;module&gt;
      self_check.preload_check()
    File "C:\Program Files\Python36\lib\site-packages\tensorflow\python\platform\self_check.py", line 82, in preload_check
      % (build_info.cudart_dll_name, build_info.cuda_version_number))
  ImportError: Could not find 'cudart64_90.dll'. TensorFlow requires that this DLL be installed in a directory that is named in your %PATH% environment variable. Download and install CUDA 9.0 from this URL: https://developer.nvidia.com/cuda-toolkit`enter code here`
  </code></pre>