I have a HP Pavilion laptop I bought end of 2017
Laptop screen create problem and I replaced my screen from my pocket in March 2019 . Now same problem happening again.
First it start flickering when table wibrated by small hit. After some time flickering and black lines appeared on screen when i touch buttom side of screen frame. After couple of weeks screen totally lost. It display just colored lines or totally black screen.
I think long time heat weakened sensitive connectors or some other part of the panel.
I found discussion about design of this model. They are asking is fan heat can harm the screen? and the answer is yes, exaust fan is harming the screen. It is design problem.
https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/Isn-t-my-laptop-s-fan-exhaust-...