My phone's screen is blank/black after I dropped it

Hello!

My phone SAMSUNG GALAXY GRAND DOUS is not working or i should say it is working but the screen is totally blank and black. I can hear the notification sound, rebooting sound but nothing appears on screen... It is after i dropped it by miatake.

Please help me.

I will be highly obliged if you do so.

Thank You

You can give me solution on my gmail id ie

yakshitkhurana@gmail.com