Fix not full screen when install windows 7 on Virtualbox or Other VM

Download All in one Folder Here : https://docs.google.com/document/d/18tPkwj_0f4ZjTcUKKuxVHt5-d90tK08z11TbOFEFZN0/preview
(Note : have the link on google docs)
Learn more about : ping command :
1. https://www.youtube.com/watch?v=OwXClvHvuKc
2. https://www.youtube.com/watch?v=IIicPE38O-s

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how to repair windows 7