I'm sorry to tell you, that all of the art you posted isn't yours. As much as I appreciate you liking these enough to upload them- this isn't a site like Tumblr or Imgur, where you can share stuff you find, and like, with others.
This is a site for showing of your own art, that you yourself have created- and this- it's kind of obvious it isn't yours, seeing how these are the sample pictures that come with many computers.
I kindly ask that you take these down, before you get in trouble for art theft, for it is clear many people have already reported you on this issue. If you choose to ignore this message, either blocking me, hiding it- or just not taking these pictures down entirely, I will have to report you, as well.