PC software DVD player problem: right side of movie missing

ok i formated my computer 2 months ago and when i tried to play any DVD the right side of the movie is cut off.
i tried to play it in the windows media player and interactual player and i got same problem in both. i tried to change my resolution of the screen but nothing changed.
someone plz help me.

Just set the viewing area to 100%.

how do i do that in windows media player?

Please try with a free player like ZoomPlayer and MediaPlayerClassic and see if it behaves the same way…