Horizontal Blue lines at bottom of screen all the time

[Ahmed_227]

Hi everyone,

Few months ago, I observed some horizontal blue lines at the bottom of my screen. It appeared all the time even during boot. Also a indigo line appeared at the right end of screen and left end pixels also started malfunctioning. As screen replacement costs nearly half the laptop I ignored the problem and kept going.

But day by day more no of lines at bottom are getting blue and now it is to cover the whole task bar. Left and right lines are stable at the previous state.

A part from the bottom middle shows normal colors of taskbar when pc is idle and after a while that lines get back to complete blue.

Is there any way to stop the no of dead pixel lines from increasing?

 blue line at bottom of screen

[A_Gayathri]

Hi @Ahmed_227,

Welcome to the HP Support Community

I understand you are facing an issue with Horizontal Blue lines at the bottom of the screen all the time with your HP Product. Not to worry I will help you to get a resolution to resolve the issue.

To assist better:

• May I have the exact model name of the product? Refer to this document for steps to find the product details. Do not share your personal information such as serial, phone number, email ID, etc.

I hope this helps! Keep me posted. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution.

[Ahmed_227]

Hello everyone,

I have been using an HP pc and here is the details:

• Model Name: 15-dw3000 (31R09AV)

Thanks and Goodbye!

[A_Gayathri · Accepted solution]

Hi @Ahmed_227,

Welcome to The HP Support Community.  

Thank you for your reply

Horizontal blue lines at the bottom of the screen on your HP Laptop PC 15-dw3000 running Windows 11 could indicate several issues, ranging from software problems to hardware defects. Here's a step-by-step guide to troubleshoot and potentially resolve the issue:

1. Check for Software Issues

Update Graphics Drivers

1. Right-click on the Start button and select Device Manager.
2. Expand the Display adapters section.
3. Right-click on your graphics driver and select Update driver.
4. Choose Search automatically for updated driver software.

Rollback Graphics Driver, Software and Drivers for HP Laptop PC 15-dw3000

If the problem started after a recent update, you might want to roll back the driver:

1. Right-click on the Start button and select Device Manager.
2. Expand the Display adapters section.
3. Right-click on your graphics driver and select Properties.
4. Go to the Driver tab and click Roll Back Driver.

Check Display Settings

1. Right-click on the desktop and select Display settings.
2. Ensure that the resolution and refresh rate are set to the recommended values.

2. Check for Hardware Issues HP PCs - Testing for hardware failures

External Monitor Test

Connect your laptop to an external monitor or TV:

1. Use an HDMI cable to connect your laptop to an external display.
2. If the lines do not appear on the external display, it suggests an issue with the laptop's screen or internal display connections.

Perform a Hard Reset

1. Turn off the laptop.
2. Disconnect all external devices.
3. Unplug the power adapter.
4. Press and hold the power button for about 15 seconds.
5. Reconnect the power adapter and turn on the laptop.

3. BIOS and Diagnostic Tests

Update BIOS

1. Go to the HP Support website.
2. Enter your laptop's model number and check for BIOS updates.
3. Follow the instructions to update the BIOS if an update is available.

Run HP Hardware Diagnostics

1. Turn off the laptop.
2. Turn it back on and immediately press the Esc key repeatedly until the Startup Menu opens.
3. Press F2 to open HP PC Hardware Diagnostics.
4. Run the System Tests and Component Tests for the display.

4. Inspect Physical Connections

If you're comfortable with it, you can inspect the physical connections:

1. Turn off the laptop and unplug it.
2. Carefully open the laptop casing (refer to the service manual for guidance).
3. Check the connections between the display and the motherboard to ensure they are secure.

Refer to this document: HP Laptop PC 15-dw3000 User manual

 HP Notebook and All-in-One PCs - Troubleshooting screen issues (Windows 11, 10)
 

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. 

[Ahmed_227]

Hello there,

I connected the pc to a monitor via HDMI. There was no blue lines in the monitor. So it's clearly a hardware issue.

Do I need to replace the screen or it can be repaired?

Thanks

[A_Gayathri]

Hi @Ahmed_227,

Thank you for your response, I appreciate your efforts. As the issue persists, I am sorry to hear that I'm sending out a private message to assist you with the next course of action. 

Please check your Private message icon on the upper right corner of your HP Community profile Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link.

I hope this helps! Keep me posted for further assistance.

Please click “Accept as 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!