安装tensorflow-gpu：ImportError: DLL load failed:找不到指定的模块 原因&解决方案

在按照教程安装tensorflow-gpu的过程中，出现ImportError: DLL load failed:找不到指定的模块:

(tensorflow) C:\Users\Administrator>python
Python 3.6.3 |Anaconda, Inc.| (default, Mar  4 2019, 15:10:56) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow
Traceback (most recent call last):
  File "D:\ProgramFiles\Anaconda\envs\tensorflow\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap