I am using a B156HAN01.2 screen in a Lenovo Y50-70 (Win10x64)
With certain colours (blue, #0075AF is a good colour to see the line) displayed, I can see what I presume a single pixel line going downwards. It doesn't seem to be composed of dead pixels, as it seems to be partially lit, kinda fades in and out. (Not dynamically, just isn't a solid line)
I have run various stuck pixel fixes, nothing seems to make much difference. I have tried different programs, so it's a hardwear issue for sure.
I have no clue, has anyone any idea?