Laptop couldn't turn on after shutting down (no light)

I shut down my laptop and it couldn't turn on the next day. Even the LED indicator does not light up when i plug in the ac adapter to the laptop with the battery. I have performed some instructions and guides from other websites and forums such as check the charger, the battery and the power jack but they seem to be no problem. I even unplugged it from the ac adapter, took out the battery, pressed the power button for 10sec and plugged in the ac adapter again. But this seems to be not working as well. I am pretty sure that the battery is fully charged.

Please help me =(