Hi,
Please do try to uninstall/reinstall the display adapter of the laptop first.
- Go to Device Manager right click on the display adapter and select Uninstall.
- Open Programs and Features and uninstall anything related to NVIDIA graphics.
- Download and install the graphics card driver from NVIDIA support site.
- Here's the link: nvidia.com/download/index.aspx
- Reboot the laptop for all the changes to take effect.
- Observe the laptop and if the same problem persist you may need to contact the manufacturer because it may need a replacement display or it's back light.