PythonでOpencvを動かしたい

https://qiita.com/cointoss1973/items/92d82f9accb239a276a0

上記のサイトを参考にWindows10のPCにPython3.8.5をインストールして、Opencvをインストールしましたが、
CV2をインポートすると下記のようなエラーがでてしまい解決方法を探していますので、
ご教授ください。（Python3.9.0で最初試したのですがそちらでも同じ結果でした）

In [1]: import cv2
On entry to DGEBAL parameter number 3 had an illegal value
On entry to DGEHRD parameter number 2 had an illegal value
On entry to DORGHR DORGQR parameter number 2 had an illegal value
On entry to DHSEQR parameter number 4 had an illegal value

RuntimeError Traceback (most recent call last)
c:\users-----\appdata\local\programs\python\python38\lib\site-packages\numpy_init_.py in <module>
303
304 if sys.platform == "win32" and sys.maxsize > 2**32:
--> 305 _win_os_check()
306
307 del _win_os_check

c:\users-----\appdata\local\programs\python\python38\lib\site-packages\numpy_init_.py in _win_os_check()
300 "See this issue for more information: "
301 "https://tinyurl.com/y3dm3h86")
--> 302 raise RuntimeError(msg.format(file)) from None
303
304 if sys.platform == "win32" and sys.maxsize > 2**32:

RuntimeError: The current Numpy installation ('c:\users-----\appdata\local\programs\python\python38\lib\site-packages\numpy_init_.py') fails to pass a sanity check due to a bug in the windows runtime. See this issue for more information: https://tinyurl.com/y3dm3h86

ImportError Traceback (most recent call last)
<ipython-input-1-c8ec22b3e787> in <module>
----> 1 import cv2

c:\users-----\appdata\local\programs\python\python38\lib\site-packages\cv2_init_.py in <module>
3 import sys
4
----> 5 from .cv2 import *
6 from .data import *
7

ImportError: numpy.core.multiarray failed to import

一応ですが、
pip install opencv-python　を入力後に下記、表示がされているので
numpy, opencv-pythonともに成功しているようでした

Collecting opencv-python
Using cached opencv_python-4.4.0.46-cp38-cp38-win_amd64.whl (33.5 MB)
Collecting numpy>=1.17.3
Using cached numpy-1.19.4-cp38-cp38-win_amd64.whl (13.0 MB)
Installing collected packages: numpy, opencv-python
Successfully installed numpy-1.19.4 opencv-python-4.4.0.46