Microsoft PowerPoint Inserting a YouTube Video (PC)
To insert a YouTube video into a PowerPoint presentation you must first download that video to your computer.
Download YouTube Videos to Your Computer
To download a YouTube video to your computer, navigate to the YouTube video that you wish to insert and in new tab or window go to: http://en.savefrom.net/
Copy the YouTubes URL and paste the URL into the box on http://en.savefrom.net/, then click the download button.
At the bottom of your screen it will ask if you want to Open, Save or Cancel. You should select the arrow by Save, then select Save as. You will then pick where you want to save and name the video.
Navigate to where you saved the file and open that file, it will then start to download the video.
Putting A Video Into Microsoft PowerPoint