Ma laptop wont turn on

Hello,

i am using a hp laptop i was watching a movie using the ac power i had no battery on it just wnt off and it was smelling of burnt when i touch it, i took it to the shop they told me that it was my negligence. the charger was demaged the pin in the charger had broken into ma laptop. what can i do is it possible to fix it i am confused and i need the laptop for school.please help