A white dotted line just suddenly appear across my screen

my laptop  is hp pavillon 15 notebook  ([edited])
After visiting the game app on my desktop. i noticed a white dotted line across the screen of my laptop.
what could be the cause? and will it go away?

Hello @kenny118 ,
Welcome to the HP Forums!
I understand you have a white dotted line across the screen of your display.
It would help to know which product and operating system you are using. It looks like you've posted the serial number instead. For information on finding your product and model numbers click here: How Do I Find My Model Number or Product Number? To see which version of Windows you are using click here: Which Windows operating system am I running?
The easiest way to tell if this is an issue with the display or graphics card (GPU) is to try an external monitor. If the issue is present on another display, you're looking at a hardware or software issue with the GPU. If the line is not present on the external monitor it's an issue with the display.
Line on monitor:
Update the GPU drivers from this website: Drivers & Downloads.
System restore to before the issue started. Tap F11 while the notebook boots to access the HP Recovery Manager.
No line on monitor:
Reseat to display cable connection. I can provide more info on this once you've provided the product number for the notebook.
Contact HP Phone support for service options: You can contact HP Technical Support at 1-800-474-6836 in North America. For all other regions click here.
I look forward to your reply!
Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

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