Laptop shut off suddenly, HP Envy Core i7

Hello,
Guys I need help badly, Everything I have is in my laptop.. it shut off suddenly while I was running virtuabox.. i wasn't running anything commands or anything.. since it was on battery I thought maybe it was power so I plugged it in.. surprisingly no power indicator light.. no nothing.. nothing works not even the power button.. no lights of any kind.. pls help me.. I have can't remove the battery because it's inbuilt.. pl help me..
Hp 5500u core i7 with 8 logical processors please help..