ASUS 405U Suddenly Turned Off and Won't Turn On

[dd.december.ari]

My laptop is asus a405u, i only used it for about 3months. I just copying some files when suddenly it turned off. I pushed the power button, didn't work. Plug the charger, charging indicator light also off. I can't take out the battery because it's built-in.
What's wrong with my laptop and how do i fix it?

 

[webworkings]

If you have only had it for that long, assuming it was bought new, then I would contact the manufacturer as it should still be under warranty.