Horizontal lines on aio 27 ca200i

[jaugell66]

Hello, I have horizontal lines on my 27 aio ca2000i touch screen. The lines appear with out me touching the screen. Also, if I touch the speaker bar cover, the lines increase dramatically. Also a separate issue, after I did a bios update from HP two days ago, the PC now boots to bit locker and I can not do anything to get past this issue as well. Please help! Thank You,

Jim

[Irfan_06 · Accepted solution]

Hi @jaugell66,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to assist you.

I see that you are facing an issue with your Laptop screen that has horizontal lines.

 Follow the below steps to access the BIOS menu.

1) Hold the power button for at least five seconds to turn off the computer. (Wait for a few seconds after releasing the power button)

2) Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu is displayed, press the f10 to access the BIOS menu.

If the issue appears on the BIOS, there is an issue with the hardware.

Or

Kindly refer to the steps on this link to update the BIOS and let me know if that fixes the issue.

Make sure you keep only the charger plugged in while updating the BIOS for your PC.

Click on the + sign next to BIOS and then download the file.

Open the file and follow the on-screen instructions to complete the update.

If the issue still persists, please click on this link for advance troubleshooting.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

I hope this helps.

Take care and have a great day ahead!

Irwin6

HP Support

[jaugell66]

Hello, after updating the bios, the aio went directly to the bit lock screen after boot up. I had to access my Microsoft account to get the key to un lock it. The horizontal lines were still present even in bios. Therefore, I deduced that it was a hardware issue. I found a video on the HP website (you tube) on how to disassemble the aio 27. I found that the seven screws that hold the screen to the frame were loose. I also found a lot of dust and dirt between the speaker board and the touch screen panel. I clean the entire screen. I also removed the screen from the frame and disconnected the video cable from the mother board. I blew it out with air, then reconnected it. Mounted the screen back to the frame, tightening all 7 screw, then putting the speaker board back on. It has been a week and there has been no horizontal lines. I praise GOD for that, and for your help and that you tube video!

[Irfan_06]

Hi @jaugell66,

That's great! Happy to hear that the issue has been resolved. I appreciate your efforts in performing the steps to fix it and If you need further assistance feel free to reach out to us.

Take care and have a great day ahead!

Irwin6

HP Support