Why the LCD don't turn on.

If I push the power on the computer will turn on. I know it because of the sound that it creates whenever I turn it on. I knew the laptop is working because there's a light on the cap lock key if I press it and the dvd player will open if I push the eject button.

I've been using this laptap everyday. Maybe it was shaken during my travel home. Maybe a part connection was lossen. When I turn it on the lvd is black out.

Do you think I need to replace the lcd screen?