White lines during boot before Windows boot manager

[David476]

Sometimes, when I turn on my laptop, it shows some white lines that disappear inmediatly

Lines are practically inappreciable

It happens randomly and white lines are showed the instant the screen lights up. Furthermore, if I access BIOS settings from Windows (restore this PC -> advanced restart -> UEFI settings) it will randomly show those withe lines on screen.

It also happens randomly when my laptop enters sleep mode.

[praveenbv]

Hi @David476, Welcome to the HP Support Community.  

Apologies for all the inconvenience

Don't worry as I'll be glad to help, 

I appreciate your efforts to try and resolve the issue, and in order to fix this issue,  your computer needs to be serviced.  As we have limited support boundaries in the support community as of now,

As this is a hardware issue, I'd suggest youContact HPin your region regarding the service options for your computer. 

If you are having trouble navigating through the above options, it's most likely because the device is out of warranty. If yes? please send me a private message with the region you are contacting us from. Check next to your profile Name, you should see a little blue envelope, please click on it.   

Have a great day!  

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