First of all you need to upgrade your pip.
You can do this in Windows by:
python -m pip install -U pip
Then go manually to your script folder, enter command line from that folder (you can do this by clicking shift + right mouse button -> Open console window), and then you should use one of this commands.
pip -V
pip --version
This will result in
pip 7.1.2 from c:\python27\lib\site-packages (python 2.7)
If you still have trouble, you can try to remove your current Python PATH, and add a new one to Python 2.7.
