hp pavillion 9000 display divided in 4 parts

[Renato53]

My pavillion 9000 has the display horizontally divided in 4 parts, even at boot time, entering BIOS setup.

Sometimes, at a new startup, all is ok, but then it switch again in the fail mode and no work is possible

[Raj_05]

Hi @Renato53,

Welcome to HP Support Community.

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

It sounds like your HP Pavilion 9000 display is experiencing a graphics or hardware-related issue, possibly with the display cable, GPU, or motherboard. Here are a few steps you can take to troubleshoot this issue.

Check Display Connection:

• If you are using an external monitor, check the cable connection between your laptop and the monitor. A loose or damaged cable could be causing the issue.
• If it's an internal display issue, consider checking the ribbon cable connecting the display to the motherboard, but this may require professional help.

External Monitor Test:

• Try connecting your laptop to an external monitor. If the external monitor works fine and the problem is only on the built-in screen, it indicates an issue with the laptop’s internal display.

Reset the BIOS:

• Since the issue occurs even at BIOS level, it might be a hardware issue, but it’s worth trying to reset the BIOS settings to default.
  • Power off the laptop.
  • Turn it back on and immediately press the F10 key to enter BIOS.
  • Find the option to reset to default settings (usually under the "Exit" menu) and select it.
  • Save changes and exit.

Update or Reinstall Graphics Drivers:

• If the system can still boot and function for a brief moment, try booting into safe mode and reinstalling the graphics drivers. You can download the latest graphics drivers from the HP website or through the Device Manager.

I hope this helps.

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Alden4

HP Support 

[Renato53]

Thank you,  Alden4.

I am sorry, but the first solution I already tried was to connect an external monitor, having the same bad result. Also the chance of a driver failure is not possible, since I have the identical problem booting both from Linux Debian 10 and from Windows 10 and also booting a live version from an usb key. I tried also to reset the BIOS (non so easy, with the display so confused :-), but with no effect.  So I too think that it is  an hardware problem, but removing and replacing the video connector didn't resolve the problem. In addition I saw in some other post in this forum that other users had the same question, but no one responded; again thank you to have answered!! So, if you have any other idea, I will be glad to try it!

Renato

Sorry, I didn't select "Accepted solution" because I think that doing that the discussion would be closed

[Raj_05]

Hi @Renato53,

Thank you for your response,

It seems the issue is likely hardware-related. Here are some additional advanced troubleshooting steps you can try to narrow down or resolve the issue.

Test with Different External Displays and Cables

• If the same issue persists on multiple external monitors with different cables, the problem is likely with the laptop's GPU or related hardware.
• Use an HDMI-to-VGA or other adapter if available to rule out port-specific issues.

Inspect the Display Cable and Connectors

• Since replacing the video connector didn’t help, inspect the cable and connector for signs of physical damage, bent pins, or burnt marks.
• Consider replacing the internal display cable entirely, as intermittent faults in the cable can be hard to detect visually.

Run a Built-In Hardware Diagnostic Test

• Use HP’s hardware diagnostics tool:
  1. Turn off the laptop.
  2. Power it on and immediately press Esc repeatedly, then press F2.
  3. Select System Tests or Component Tests, especially for graphics and display.
• If the diagnostics return errors, note the error code for further action.

Reflash or Update the BIOS

• If you suspect BIOS corruption, try reflashing or updating it:
  1. Download the latest BIOS update from the HP support website.
  2. Use HP's BIOS recovery options or create a bootable USB with the updated BIOS.
• This requires caution—interruptions during this process can cause further issues.

Inspect GPU and Cooling System

• Overheating GPUs can cause display artifacts. Check for proper thermal paste application and clean any dust from the cooling system.
• If your laptop has a dedicated GPU, try disabling it in the BIOS or via a software tool (like the NVIDIA Control Panel or AMD Catalyst) to force the system to use integrated graphics.

Check for Electrical Grounding Issues

• Improper grounding can cause display issues. Test the laptop with a different power adapter or with the adapter unplugged (on battery power).

Try Replacing the Display Panel

• As a last resort, replace the laptop’s internal display panel. Faulty panels can cause distorted or blank displays even if the GPU and cables are fine.

I hope this helps.

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Alden4

HP Support 

[Renato53]

Thank you, dear Alden4, for your fast and complete response.

I have to say that:

- the cable and the external monitor are ok, since they work file connecting another laptop

- resetting the BIOS and furthermore reflashing the BIOS with a new version is very hard, since it is difficult to view what there is on the display and what option I am selecting (as you said "This requires caution—interruptions during this process can cause further issues")

- due to the same reason, doing system tests (ESC and F2) is not so easy or absolutely non affordable (*)

- I too think that there is a problem on the GPU, but I am not able to find the component inside the computer and, even if I where able to do it, I think it is not replaceable

Again, many thanks  for your patience and your professionality. I am so sorry because I am using HP and Compaq computers since I was born (but at least since 50 years!) with great results, also with great HP support

Bye. Renato

(*)I try to attach a photo of the display at BIOS:

[Raj_05]

Hi @Renato53,

Thank you for your response, 

Is there anything else that I can help you with today?

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Take care and have a great day ahead!

Alden4

HP Support