NPM error

[okothmark]

I ran the following command

npm init -y

npm install express sequelize pg pg-hstore aws-sdk fluent-ffmpeg multer dotenv

and get this error everytime

npm : The term 'npm' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1

• npm init -y

•   + CategoryInfo          : ObjectNotFound: (npm:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  
  

npm : The term 'npm' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:2 char:2

• npm install express sequelize pg pg-hstore aws-sdk fluent-ffmpeg mul ...

•  + CategoryInfo          : ObjectNotFound: (npm:String) [], CommandNotFoundException
   + FullyQualifiedErrorId : CommandNotFoundException
  
  
  
  

Kindly help.