Go to Control Panel -» System -» Advanced System Setting -» Tab Advance -» Environment Variables Button, and edit environ for PATH, add new environ: %SYSTEMROOT%\System32\WindowsPowerShell\v1.0\
Go to Control Panel -» System -» Advanced System Setting -» Tab Advance -» Environment Variables Button, and edit environ for PATH, add new environ:
%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\