title: TensorFlow GPU 1.10 not working with CUDA 9.0
body: <p>As in title - I have installed TensorFlow GPU 1.10 and CUDA 9.0 - and they are not working. Traceback from Pycharm 2018.2:</p>
  
  <pre><code>Traceback (most recent call last):
  </code></pre>
  
  <p>File "C:\Users\Admin\AppData\Local\Programs\Python\Python36\lib\site-packages\tensorflow\python\platform\self_check.py", line 87, in preload_check
      ctypes.WinDLL(build_info.cudnn_dll_name)
    File "C:\Users\Admin\AppData\Local\Programs\Python\Python36\lib\ctypes__init__.py", line 348, in <strong>init</strong>
      self._handle = _dlopen(self._name, mode)
  OSError: [WinError 126] Nie można odnaleźć określonego modułu</p>
  
  <p>During handling of the above exception, another exception occurred:</p>
  
  <p>Traceback (most recent call last):
    File "C:/Users/Admin/Documents/PycharmProjects/DL_Tensor_Flow_Beggining/TF_Neural_Network.py", line 2, in 
      import tensorflow as tf
    File "C:\Users\Admin\AppData\Local\Programs\Python\Python36\lib\site-packages\tensorflow__init__.py", line 22, in 
      from tensorflow.python import pywrap_tensorflow  # pylint: disable=unused-import
    File "C:\Users\Admin\AppData\Local\Programs\Python\Python36\lib\site-packages\tensorflow\python__init__.py", line 49, in 
      from tensorflow.python import pywrap_tensorflow
    File "C:\Users\Admin\AppData\Local\Programs\Python\Python36\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 30, in 
      self_check.preload_check()
    File "C:\Users\Admin\AppData\Local\Programs\Python\Python36\lib\site-packages\tensorflow\python\platform\self_check.py", line 97, in preload_check
      % (build_info.cudnn_dll_name, build_info.cudnn_version_number))
  ImportError: Could not find 'cudnn64_7.dll'. TensorFlow requires that this DLL be installed in a directory that is named in your %PATH% environment variable. Note that installing cuDNN is a separate step from installing CUDA, and this DLL is often found in a different directory from the CUDA DLLs. You may install the necessary DLL by downloading cuDNN 7 from this URL: <a href="https://developer.nvidia.com/cudnn" rel="nofollow noreferrer">https://developer.nvidia.com/cudnn</a></p>
  
  <p>Process finished with exit code 1</p>
  
  <p>I checked CUDA 9 files and there is no 'cudnn64_7.dll' file.
  Only cud....dll files there are are: cudart32_90 and cudart64_90</p>
  
  <p>What should I do? </p>
  
  <p>&lt;&lt;>>
  I have downloaded CUDnn 9.0 and I've added it as a environmental variable - still same error.</p>
  
  <p>Specification of laptop: Win10, 8GB DDR4, Nvidia GTX 1050, i7 7700HQ</p>