So i've had my benq xl2430 for a long time (2-3 years) i've really enjoyed using it but it has always had this small tear of either pixels or a stubborn smudge. I've tried to remove it while cleaning my monitor but i could never do it, I was to lazy to return it so i put up with it. Recently i decided that its about time i return it if i can, I would like to know if this is a smudge or dead pixels/sub pixels.
https://gyazo.com/cd87be4ab9df1851074074d00af8ee31
https://gyazo.com/cd87be4ab9df1851074074d00af8ee31