Vertical and horizontal lines on screen

[jatminder]

Hello,
I have Asus Rog Strix G712LV 17" laptop with intel UHD graphics and Nvidia RTX 2060 graphics.
All of a sudden, my laptop screen started to show vertical and horizontal lines.
Horizontal lines are very fine lines, causing difficulty reading small text such as icon labels. they are covering the entire screen and always there.
Where vertical lines keep changing, sometimes they are covering the entire screen, sometimes they are very less. Also they become light and disappear with opening/closing random files or moving the mouse cursor. Verticles lines are not visible on white screen and most visible on black screen.
I tried uninstalling and reinstalling the both graphics drivers for Intel and Nvidia and restarted the laptop multiple times but it did not help.
What should I do. My laptop is not under warranty.
Images:

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[nomadd]

Looks like the panel is starting to delaminate? Or the zebra strips connecting it to the driver ic's peeling away? Or maybe overheating?

Guess the most obvious thing is to plug it into an external monitor and see if the problem persists. If not, then most likely the panel will need to be replaced (via Asus or a third-party repairer). May not be possible and/or cost-effective.

 

[jatminder]

Looks like the panel is starting to delaminate? Or the zebra strips connecting it to the driver ic's peeling away? Or maybe overheating?

Guess the most obvious thing is to plug it into an external monitor and see if the problem persists. If not, then most likely the panel will need to be replaced (via Asus or a third-party repairer). May not be possible and/or cost-effective.

I don't have a separate monitor but I took a screenshot from my laptop and emailed to myself to view it on my phone and the screenshot is perfectly fine.

 

[jatminder]

So I ordered new screen, replaced it. it worked. then next day, I turned back my laptop, display was blank, I tried connecting it to 2nd monitor at my work, to my TV via hdmi port, no display. ALso, whenever I turn my laptop on it plays a tone along with displaying ASUS ROG logo. Now there is no tone when I turn ON my laptop. I am not sure its a display issue or another issue alltogether where its failing to run the hardware? I can't go into BIOS settings which I am not sure whether its going into BIOS and the display is not working or some hardware is failing? I tried going to safe mode as well with no luck on display. How can I test it?

Thank you!