Willygee, the code entered in your post is just this: www.youtube.com/embed/W. This is not a valid URL for anything on YouTube. That's why the screen is blank. I'm not sure where you are getting that code, but that URL will never work.
If you simply cut and paste the YouTube URL into the video box here as ACDX ROB has suggested, it will work. However, you don't have the option of turning off the Suggested Video list which comes up after the selected video is over. Typically that list will have videos shown in it that have nothing to do with the original video link. I personally find that very annoying and always shut it off.
Here's the same video that I embedded above, but instead of embedding it, I just pasted the URL into this post. Watch what happens when it finishes. A bunch of other video "recommendations" come up. I don't like that...
