I can't seem to install numpy to PyCharm.
I started with an up-to-date, fresh install of Python 2.7.8 and PyCharm 3.4.1.
Then I installed winpython in PyCharm to get the numpy and scipy packages using
File > Default Settings > Project Interpreter > selected Python 2.7.7 > installing pip and setuptools > installing winpython...
After installing these, I went to run a simple code using numpy and continue to get an error of "no module named numpy". My professor did the exact same thing and his works fine (both using Windows 7).