vcvarsall.bat
looks like a dependency for Microsoft Visual Studio.
See: Python issue:Unable to find vcvarsall.bat
You could try to install it manually. Get the amd64 py3.4 build from here:
http://www.lfd.uci.edu/~gohlke/pythonlibs/#psutil
And install it. If that fails as well, use 7-Zip to open the .exe and unpack the contained folder to your site-packages.