cupyがimportできない

Question

前提・実現したいこと

import cupy が上手くいかない

発生している問題・エラーメッセージ

>>> import cupy
Traceback (most recent call last):
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\__init__.py", line 21, in <module>
    from cupy import core  # NOQA
  File "C:\Users\UserAppData\Local\Programs\Python\Python37\lib\site-packages\cupy\core\__init__.py", line 1, in <module>
    from cupy.core import core  # NOQA
  File "cupy\core\core.pyx", line 1, in init cupy.core.core
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\cuda\__init__.py", line 5, in <module>
    from cupy.cuda import compiler  # NOQA
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\cuda\compiler.py", line 14, in <module>
    from cupy.cuda import function
  File "cupy\cuda\texture.pxd", line 6, in init cupy.cuda.function
  File "cupy\cuda\texture.pyx", line 1, in init cupy.cuda.texture
ImportError: DLL load failed: 指定されたモジュールが見つかりません。

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\__init__.py", line 42, in <module>
    six.reraise(ImportError, ImportError(msg), exc_info[2])
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\six.py", line 702, in reraise
    raise value.with_traceback(tb)
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\__init__.py", line 21, in <module>
    from cupy import core  # NOQA
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\core\__init__.py", line 1, in <module>
    from cupy.core import core  # NOQA
  File "cupy\core\core.pyx", line 1, in init cupy.core.core
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\cuda\__init__.py", line 5, in <module>
    from cupy.cuda import compiler  # NOQA
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\cupy\cuda\compiler.py", line 14, in <module>
    from cupy.cuda import function
  File "cupy\cuda\texture.pxd", line 6, in init cupy.cuda.function
  File "cupy\cuda\texture.pyx", line 1, in init cupy.cuda.texture
ImportError: CuPy is not correctly installed.

If you are using wheel distribution (cupy-cudaXX), make sure that the version of CuPy you installed matches with the version of CUDA on your host.
Also, confirm that only one CuPy package is installed:
  $ pip freeze

If you are building CuPy from source, please check your environment, uninstall CuPy and reinstall it with:
  $ pip install cupy --no-cache-dir -vvvv

Check the Installation Guide for details:
  https://docs-cupy.chainer.org/en/latest/install.html

original error: DLL load failed: 指定されたモジュールが見つかりません。

該当のソースコード

pip install cupy-cuda101
pip install chainer
>>>import cupy

試したこと

cudaの再インストール
pythonの再インストール

補足情報（FW/ツールのバージョンなど）

os windows10 64bit
cuda10.1
python3.7.7

Comments

[hayataka2049]

nvidivaのGPUが刺さっていてドライバとCUDA Toolkit を予め導入していることが必要かと思いますが、すべて満たされていますか？
インストール記事は調べると色々出てきますので、それらも参考にされてください。