Download the Node.js LTS installer from https://nodejs.org/
Run the installer
Follow the installation prompts
Ensure “npm package manager” is selected during installation
Complete the installation
Open Command Prompt or PowerShell
Verify installation with `node -v`
Verify npm installation with `npm -v`
If needed, restart your computer
If npm is not recognized, reopen the terminal
If needed, reinstall Node.js using the official installer