so, i have recently got hold of a used M17XR4. everything is great, except the screen shows these tiny flashing horizontal lines, sometimes blue, sometimes white. only shows up on a black background, white or lighter colours the screen is clear and crisp.
it shows up throughout the startup process, and then continues after boot.
it does not manifest this when HDMI Input is used.
have downloaded latest Nvidia drivers, flashed the BIOS, and have just done a windows 10 update too (problem was present on windows 7.