Power off still not coming on

Registration date
Saturday June 1, 2013
Last seen
June 1, 2013
My gateway NE56R31u had a power off. I have tried the 30 sec press holding power button before pouting in th power cable and later the battery and its still not coming on. I have also tried extending the screen to about 135 degree before powering it and pressing the power button but all to no avail. Please guys I need your help to solve thus issue with my laptop. It just went off while I was using and charging it. Now no lights or sounds comes when I plug and turn it on. Please help me...