BSOD after a dropped laptop, not related to RAM or HDD

Hi,

I have a BSOD after dropping the laptop. I have already excluded that it is not the HDD (by disconnecting the HDD and booting into a boot USB.) and it is not the RAM (tested on other laptop and it worked. And with other RAM).

Any recommendations on how to start troubleshooting the other hardware components? Any specific parts that are sensitive to dropping etc.

Thank you,
igor