I am starting out angular app with angular-fullstack in my Windows 7 box. I installed bunch of npm packages with -g options, including grunt-bower-install. I created the app
Try to do bower install. If its failing saying not able to connect to git then you can change repo pointing location by simply running below command
$ git config --global url.https://github.com/.insteadOf git://github.com/
This will ensure that you will be downloaded over https instead of git if its causing orginasation firewall to block it.