LCD Replacement Problem ( No Power )?

What could have gone wrong?

Yesterday, I ended up fixing my broken LCD which only showed a white screen due to the cracks on the left of the screen.

Following the guide here on iFixit, everything went as perfectly as it could. Cables are all in perfect shape, connectors are just like I found them.

But finally once I boot it up, nothing happens on display. Computer boots perfectly, sounds, fans and everything but the LCD. The only thing I can think of is that I put the connector in the back of the LCD loose but wouldn't I still get some kind of sign of power? What should i do? I have a theory that if I disconnect the LCD cable from the logic board and boot it. Would it detect that the LCD isn't plugged in? Then try putting the LCD connector in and hope for a miracle?

Today I'm going to take it apart once again and let you guys know if anything turns up.

Thank you in advanced for any help!:)