Dont work ionic and cordova

Hey. I have a problem. I uninstalled the version of Node JS 9.1.0 and installed 8.9.1. After that, Ionik does not work in cmd. What is the problem? The command line just does not see it!

Has corrected. I did not add a Path to the npm directory.

Hello,

for further changing node maybe using nvm is a goog idea.

Best regards, anna-liebt