Burning smell

So yesterday I used my laptop and then left it open and used my phone only to smell a somthing burning and then the screen going black. So without thinking i took out the battery and disconnected the charger. Suspecting that it is the fan I tryed turning it on only to Be greeted with a blinking...

my laptop just stopped working while i was using it it switched of by it self. so i took it for repair and the ram was replaced and i took it home used it for an hour and it switch of again this time with a burning smell left behind from the charging port side..what could it be and can it be...