Not able to import matplotlib

the extension is really good but when I try to execute code to plot any graph, its throws an error message stating as mentioned below:

Traceback (most recent call last):
File "D:\Program_Files_New\Anaconda\lib\site-packages\numpy\core\__init__.py", line 16, in
from . import multiarray
ImportError: DLL load failed: The specified module could not be found.

-I know that I've already installed the module and working fine with python interpreter
-Could you please tell me if there any setting need to be done to make graphs work or its a known issue.