python tensorflow import dll load failed

I installed latest python 3.6.4 x64 version

and then installed tensorflow for cpu-only with pip3

C:\>pip3 install tensorflow

however when I tried to import tensorflow in python

it showed me the error below

I am sure that I have installed Microsoft Visual C++ 2015 Redistributable(x64)

so it wll not be the problem of dll msvcp140.dll lost

it say that "DLL load failed with error code -1073741795"

so what is exactly the problem here

i cannot find any other information about this error code

my os : windows 7 enterprise with service pack 1 / 64 bit / intel core i5 M 540

>>> import tensorflow
Traceback (most recent call last):
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow_internal.py", line 18, in swig_import_helper
    return importlib.import_module(mname)
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\importlib\__ini
t__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 658, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 571, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 922, in create_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ImportError: DLL load failed with error code -1073741795

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow_internal.py", line 21, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow_internal.py", line 20, in swig_import_helper
    return importlib.import_module('_pywrap_tensorflow_internal')
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\importlib\__ini
t__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
ModuleNotFoundError: No module named '_pywrap_tensorflow_internal'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\__init__.py", line 24, in <module>
    from tensorflow.python import *
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\__init__.py", line 49, in <module>
    from tensorflow.python import pywrap_tensorflow
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow.py", line 74, in <module>
    raise ImportError(msg)
ImportError: Traceback (most recent call last):
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow_internal.py", line 18, in swig_import_helper
    return importlib.import_module(mname)
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\importlib\__ini
t__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 658, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 571, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 922, in create_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ImportError: DLL load failed with error code -1073741795

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow_internal.py", line 21, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\site-packages\t
ensorflow\python\pywrap_tensorflow_internal.py", line 20, in swig_import_helper
    return importlib.import_module('_pywrap_tensorflow_internal')
  File "C:\Users\Alan\AppData\Local\Programs\Python\Python36\lib\importlib\__ini
t__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
ModuleNotFoundError: No module named '_pywrap_tensorflow_internal'


Failed to load the native TensorFlow runtime.

See https://www.tensorflow.org/install/install_sources#common_installation_probl
ems

for some common reasons and solutions.  Include the entire stack trace
above this error message when asking for help.