android - Error install ionic cordova -

so, i'm trying install ionic cordova in computer, don't have sucess. can me, please?

npm err! network npm err! network if behind proxy, please make sure npm err! network 'proxy' config set properly. see: 'npm config' npm err! windows_nt 6.1.7600 npm err! argv "c:\program files\nodejs\node.exe" "c:\program files\n node_modules\npm\bin\npm-cli.js" "install" "-g" "ionic" npm err! network npm err! network if behind proxy, please make sure npm err! network 'proxy' config set properly. see: 'npm config' 

i tried lot of things: execute adm, reinstall. system 64-bit , path:

c:\programdata\oracle\java\javapath;%systemroot%\system32;%systemroot%;%systemroot%\system32\wbem;%systemroot%\system32\windowspowershell\v1.0\;c:\xampp\php;c:\programdata\composersetup\bin;c:\users\cássia\appdata\local\android\android-sdk\platform-tools ;c:\program files\nodejs\

seeing path have provided, still has path npm missing. recommend uninstall node control panel, restart device , install correct version of node. me, node version 5.3.0 working well. however, installing node version 0.10.38 may trick you.
path:

c:\program files\java\jdk1.8.0_65\bin;c:\program files (x86)\android\android-sdk\platform-tools; c:\program files (x86)\android\android-sdk\tools;c:\program files (x86)\apache-ant-1.9.6-bin\apache-ant-1.9.6\bin; c:\windows\system32;c:\users\office\appdata\roaming\npm;