Canvas is only partially visible in Photoshop 22.1

Hi All. 

Using PS 22.1. When I open and create a new project or try to view an old one, when viewing at 100% I can only see a very small portion of the bottom of my canvas-which is up at the top of my screen (see attached image).  If I increase view to 200% I can see most of it, but this is very cumbersome.  I reset my window view to default settings but no luck.  I'm relatively new to this program so appreciate any guidance.

Thanks for any thoughts!

SG

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