import opencv error (DLL load failed)

[Xristos Xristoou]

hi

i have windows 10 and python 3.5.1 and i want to install open cv.
first i go to http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv
and download the opencv_python-3.1.0-cp35-none-win_amd64.whl
from command prompt i install with pip.
pip install <my path>\opencv_python-3.1.0-cp35-none-win_amd64.whl
and show me successfuly installed opencv-python-3.1.0.
i look the files in the site-packages and now i have opencv files
cv.py
cv2.cp35-win_amd64.pyd
and more 
opencv.dll files
 

after successfuly installed open python idle i a try to import
cv2 and i take that error massege ..

error massege 

import cv2
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    import cv2
ImportError: DLL load failed :............

after this error downloaded opencv 3.0 and extracted it.copying cv2.pyd to the site-packages folder and show me again this error massege .

can you tell why?and how to FIX THAT ?