The first computer monitor I looked at had a green screen. Why green? There were no color programs all were utilitarian. They didn't call them monitors anyway they were referred to as CRTs (cathode ray tubes). My first computer with the green screen CRT, I think it was 10 inch. With an impressive resolution of about 160 x 200, text filled the screen with about 8 or 10 lines. Zoom to the 21st century. In all this time through all the monitors I've owned I've never seen a real live dead pixel that I knew of, until now. I have a Asus 279Q piping out a resolution of 2560 x 1440 through a display port on a graphics card. (My new motherboard has a built in display port.) The other day I was looking at some pics my daughter had taken in Alaska. The first pic had a tiny white dot in the sky I thought was maybe a star since it was taken late evening. The next pic had the same dot in about the same place. It's on the screen. Flick, flick. Lens tissue, rub, rub. Nope, must be on her sensor. Lightroom to the rescue!!! Click, Click, click. Nope still there. Zoom in and it's still there. Got to be a dead pixel. I've heard of those. I you drew diagonals on the screen the dead pixel is centered. As I've scanned through each pic my attention is drawn to the little white dot. I had an old car with a shorted out idiot light I fixed with a piece of black electrical tape but I guess that's not an option. I do have colored artist pencils but changing the dot to match the color in the photo would be a pain where I sit. So-o-o learn to live with the white dot centered on the screen staring right at me, yeah. Anyway my motherboard just croaked and I'm awaiting the new assemblage to build my very last, final, won't be anymore (I'm 73) desktops to hook to my monitor with the dead pixel.