Horizontal lines on the bottom of my screen. (NO PHYSICAL DAMAGE)

[Phroggs]

Horizontal lines appear on the bottom of my screen covering my task bar, and it acts like a reflection of the top of my screen the color of the lines is the same as the color of the background/application open, after resetting or shutting down the laptop the height of the lines can change. To my knowledge there has been no physical damage to the display, although the laptop gets hot sometimes, I don't think that is the cause of the problem. All drives and up to date and there are no other available updates besides updating to windows 11 and 4 optional diver updates. I have reinstalled my graphics drivers before and factory reset my laptop (for a different reason) and the problem is still there.

[sandytechy20]

@Phroggs 

Welcome to the HP support community.

I understand that you are getting horizontal lines at the bottom of the screen, I am glad to assist you.

If you haven't, Please try an alternate monitor to understand if this is either a hardware or a software failure, 

if the issue does not appear on the alternate monitor, you may need to replace the display assembly on your computer, 

if the issue appears on the alternate monitor/TV as well, re-install the graphics card drivers & update it from the official HP Website: Click here 

If you don’t have an alternate monitor, I recommend checking if the issue appears on the BIOS screen (restart the computer and tap on F10 to access BIOS) 

If the issue does not appear in BIOS, reinstall the graphics card drivers & update BIOS using the above link, 
If it does, you may need to replace the LCD/Repair the computer: 

Keep me posted.

If this helps, please mark the public post as an accepted solution so that it benefits several others.

Cheers.

[Phroggs]

The issue still appears in BIOS

[sandytechy20]

@Phroggs 

This seems to be a hardware issue.

This might require one on one interaction to fix the issue, I am sending you a private message with the steps to talk to HP support.

Please check the mailbox icon at the top-right corner of this screen.

I hope this helps resolve this issue completely.

If this helps, please mark the public post as an accepted solution so that it benefits several others.

Cheers