Got Error While Installing Cordova/Ionic in Windows PC

Hello Developers,

I am new in Mobile Development & I have just starting to learn Phonegap & Ionic to make Mobile Application.

But, While Installing the Ionic Framework in my Windows(WINDOWS 7) PC I am getting following errors, Which image file I have shared below:

Please help me ASAP so I can satrt making my first Mobile Application.

Thanks,
Sandip Mistry

try npm install -g cordova@4