ImportError: DLL load failed: The file cannot be accessed by the system

Traceback (most recent call last):

  File "<ipython-input-9-a40793f9ded7>", line 7, in <module>
    from sklearn.model_selection import train_test_split

  File "C:\ProgramData\Anaconda3\lib\site-packages\sklearn\__init__.py", line 76, in <module>
    from .base import clone

  File "C:\ProgramData\Anaconda3\lib\site-packages\sklearn\base.py", line 16, in <module>
    from .utils import _IS_32BIT

  File "C:\ProgramData\Anaconda3\lib\site-packages\sklearn\utils\__init__.py", line 20, in <module>
    from .validation import (as_float_array,

  File "C:\ProgramData\Anaconda3\lib\site-packages\sklearn\utils\validation.py", line 21, in <module>
    from .fixes import _object_dtype_isnan

  File "C:\ProgramData\Anaconda3\lib\site-packages\sklearn\utils\fixes.py", line 18, in <module>
    from scipy.sparse.linalg import lsqr as sparse_lsqr  # noqa

  File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\sparse\linalg\__init__.py", line 113, in <module>
    from .isolve import *

  File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\sparse\linalg\isolve\__init__.py", line 6, in <module>
    from .iterative import *

  File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\sparse\linalg\isolve\iterative.py", line 10, in <module>
    from . import _iterative

ImportError: DLL load failed: The file cannot be accessed by the system.

Got this error while trying to run some already used python scripts on pycharm. Has anybody had this error before and has he solved it? It started after I installed a package in python but never used it. The problem is located when I try to import train_test_split on scikit-learn and tensorflow, the sklearn package and seaborn. The other parts of the code seem unaffected. I have already reinstalled anaconda and python as well as changing the python files. Any help would be greatly appreciated.