I dropped my laptop and it won't turn on

I would recommend checking out this page. It lists out a few things you can try. If none of these steps work for you then your machine may have been damaged from the fall, in which case you will need to open it up and inspect the interior for signs of damage. There are also some additional steps you can take to try to power on the machine, including performing an SMC bypass, triggering the power on pads, and disconnecting various components from the logic board to isolate the issue. Hope this helps!