Laptop HP problems after power on (Black screen before the logo HP)

[Mattia_]

I bought the HP laptop model 15s-fq2089nl in 2020. The warranty has expired and I chose not to renew it. Today, when I turned on my PC, it initially powered up and stayed on the startup screen with the HP logo, but there were strange red pixelated lines across the entire screen—except for the logo—for a couple of minutes. I tried restarting it manually, but nothing changed. In fact, now when I turn it on, the screen stays completely black. I can tell it's on only because the power indicator light is on and the fans are spinning. The screen remains black even before the initial HP logo screen appears.

[Garp_senchau]

@Mattia_, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

External Display Check

Try connecting your laptop to an external monitor or TV. If you get a display on the external monitor, this indicates that the internal laptop screen is faulty. It could be a problem with the screen itself or its connection to the motherboard.

Hard Reset

Perform a hard reset by following these steps:

Turn off the laptop and unplug it from any power source.

If your laptop has a removable battery, remove it.

Hold down the power button for about 30 seconds.

Reinsert the battery (if applicable) and plug the laptop back in.

Power on the laptop to see if the screen turns on.

BIOS Reset

To reset the BIOS settings:

Turn off your laptop completely.

Press and hold the Windows + B keys.

While holding these keys, press and hold the Power button for about 5 seconds.

If successful, the BIOS recovery screen will appear. You can attempt to reset the BIOS to default settings.

You can refer to this guide: HP Notebook PCs - Recovering the BIOS (Basic Input Output System) | HP® Support

Also, you may refer to these guides: 

How to Fix a Black Screen on Your Computer | HP® Tech Takes < Tech Takes - HP.com Malaysia

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

I hope this helps.

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,