Many times there is  some issue on  power circuit and laptop won't turn on,  now i am share all the possible reasons of such a problematic laptop on simple steps to fix  not power on problem. first you have to check  charger and power cord  is working properly or not  if charger is working then check battery and once remove the battery and try to power on the laptop with connecting the charger after that  check the power button 

no power on while connecting charger or also new battery even battery and charger is  ok , may be mother board problem  in this case need  to repair motherboard.we are  here at nagmastha  fix this type of problem in reasonable price.