first: in your computer, search edit the system environment variable,
second: go to environment variables,
third: then add it

node js
Variable Name

C:\Program Files\nodejs

Variable Value

C:\Program Files\nodejs

nvm
Variable Name

C:\Program Files\nvm

Variable Value

C:\Program Files\nvm

npm log path
Variable Name

NPM_LOG_PATH

Variable Value

C:\Users\Softlab IT\AppData\Local\npm-cache\_logs