Monitor broken

So theres a vertical line of pixels, one pixel wide going straight down the middle that show different colours. However when using the various stuck pixel applications the line does not appear and it shows the right colour. The pixels on that line are not stuck on one colour, but show similar...

Build: I5 7600K GTX 970 4GB ROG Strix Z260H DDR 4 16GB Situation: My friend wanted to build his own gaming desktop. I decided to donate him my GTX 970 so I could upgrade mine so I could get some better performance. Wanting to game 144hz 1440p was a desire so I decided an RTX 2080 should be able...