Touch screen lines

[KyryloP]

Today I've noticed some lines in the top left corner of glossy touch display.

They are seen only from specific angle and even on switched off display. What is this and what a reason could be? How to fix it? 

[praveen196]

@KyryloP Welcome to HP Community!

I understand that the touchscreen has lines.

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: 

  

If the issue occurred after an accident (such as dropping it on the floor, liquid spilled on it, etc.) there could be a hardware failure and in such cases, you may need to get the computer repaired via HP (there could be a charge involved if the PC isn't covered by the accidental damage protection plan) 

  

Reply with the result of the above-mentioned steps, for further assistance. 

Keep us posted,

If you would like to thank us for our efforts to help you, 

Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post, 

Have a great day!

[KyryloP]

Thanks!

It is obvious that it is hardware issue, because lines are seen even on switched-off display.

There was not any accidents with device.

[KrazyToad]

Please check in the BIOS and let me know if you see those lines

Shut down the Notebook and upon restarting keep tapping on F10 till you see System Configuration Menu ( BIOS )

If the issue exists in BIOS, please contact HP Support in your Region for Service Options

1) Click on this link - www.hp.com/contacthp/ 
2) Select your product type below.
3) Enter the serial of your device. 
4) Select the country from the drop-down. 
5) Select the chat or get phone number options based on your preferences. 
6) Fill the web-form and proceed further.
 

Thank you

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.