Sure bios is the issue… from now one every laptop dropped will be fixed with bios/soft…where did you get this ideia? You’ll have to open the laptop to check components seating and possible damage to the pcb, if the mainboard was hot when dropped it can have now cracked soldering components and so on…
The days of good chassis were gone long time ago, now you deal with 100% plastic and more margins of profit for the OEM, good luck.