White screen problem in hp 12 generation i3

Hi @ramsingh79069

What is the full model number of the laptop as shown on the information label on the bottom of the laptop?

Knowing this will help to locate the correct parts if replacement parts are required.

Post an image of the screen, in your question, showing the problem so it can be seen by other as this may help to know what might be wrong. A picture is worth a thousand words Here's how to do this on ifixit Adding images to an existing question