Ok. First off, I'm sorry about how I reacted. I just now realized, that I actually never specified my exact problem. I thought it would be obvious from the picture, but obviously it isn't. So, I'm really sorry about how I treated you! I'm just kinda used to getting trolled and I read a lot of your messages really sarcastic
The problem is in fact, the sharp line my monitor is an Asus VG278HE and I found out that it's basically beyond easy repair and I opted to to buy a new monitor. This one's been with me for many years so I guess it's just time to say goodbye. Also my fault for fucking on my desk.
Thank you for trying to help me and again, I'm sorry for being such an ass!