Flickering screen with horizontal and vertical lines when laptop switched on

[Kudos24542]

When laptop is started, the screen flickers violently with horizontal and vertical lines.   I then press the start button until laptop turned off...and then wait 10 to 15 seconds, switch back on and there is no problem from thereon.   Have used HP Diagnostics which said some drivers were missing so I ran that hoping that would solve the issue and saw a screen wich said No Issues. Unfortunately, the flickering screen when I first turn on the laptop still persists.   It's all a mystery! Please help. Thank you.

[Deep_World · Accepted solution]

Hi @Kudos24542,

Welcome to the HP Support Community!

Thanks for reaching out!

We're thrilled to have the opportunity to assist you and provide a solution.

Sorry for the inconvenience caused don’t worry let me help you.

Please follow the below steps : 

1  Update Graphics Drivers

• Go to Device Manager → Display adapters → [Your GPU] → Update driver.
• Or download the latest driver from HP Support for your exact laptop model.

2  Update BIOS

• Check HP Support → Software and Drivers → BIOS for your model.
• Updating BIOS can resolve graphics initialization issues during startup.

3  Disable Fast Startup

• Go to Control Panel → Power Options → Choose what the power buttons do → Change settings that are currently unavailable → uncheck “Turn on fast startup”.
• Save changes and restart.

4  Check for Windows Updates

• Make sure all updates are installed, as they sometimes include important display fixes.

I hope this helps.

I'm glad I could help! 😊 If this resolved your issue, please mark it as "Accepted Solution" and click "Yes" on "Was this reply helpful?" Your feedback not only keeps us going but also helps others find the solution faster! 

Take care and have an amazing day ahead! 

Best regards,

Deep_World