To identify and possibly fix the cause of dead pixels on a laptop screen, follow the below steps:

1. Check if it is a software issue – search for virtual objects such as stickers or icons that may have been left behind on the laptop screen. They can cause appearing of pixels on the screen.




2. Check the contrast of the laptop screen display and make the necessary adjustments.




3. Run a pixel repair tool (can be found online) on the laptop to fix any stuck pixels. It might help to adjust the intensity levels for the dead pixels.




4. If the above steps do not help, consult professional laptop repair services to help diagnose and repair the laptop screen.