What video ? YouTube...Or Netflix in HD ?
How old is your pc? What is the resolution of the display?
Is this a new problem that just started
Depending on which program you are using to watch the video
The preferences/settings, control the display size
Example ..always fit to window, always full screen,
If there's are "not check marked", video should open at original resolution
I use the free VLC..VIDEO LAN PLAYER, Or media player classic
They are the two best video play programs and far better than Windows media player
I can explain it to you.
But I Can Not understand it for you !
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