acer v3-571G , my laptop is going through different unusual problem. when i press the power botton it wont work for certain time ( for certain duration its completely dead), but to check if i press for 2 -3 min continuously it will start to work but at sometime it turns on at first attempt .so i thought battery problem so i take out battery and connect charger same thing happen , power light turns on after certain duration sometime after first attempt but mostly after 3 -6 min . its prooves there isnt any problem on battery and power botton , so i did bios update and clean all the inner parts still doesnt work ,Once it turn on , everything work smoothly either i take out battery or connect disconnect charger , only preblem start after showdown and to restart again . please HELP anyone have any FIX idea