First white screen then total black display

Hi,

I am using Pavillion 14 series HP laptop (core i3 with 4 GB RAM).

Few months before My laptop fell from the table then the web cam did not work even after given a new OS.

Then yesterday I see a complete white screen in my laptop.

I check VGA cable , external monitor was working fine. Then I do the hardware reset by open the battery and hold the power button. Not working.

Then I open the display and check the connection. Now display is complete black.

when i push the power button power goes on but no display at all.

By the way I try to check the display connection while computer is running. I don't know what to do know. Can you guys help me?? Thanks Tanvir

HP pavilion 14-e015tx