Two pointers:
Show "white space" between pages in Print Layout View.
File > Options > Display
This is an Application-wide setting. It appears to be unchecked from viewing your screenshot.
Make sure the vertical alignment of your pages is not set for center or bottom.
Page Layout > Page Layout Group > Dialog Dropdown > Layout Tab
This is a section-by-section setting and can be different in each section of a document.
Sections / Headers and Footers in Microsoft Word 2007-2013