Was that a CD/DVD type that no longer works?...or, can you try and connect a bootable USB device to the laptop. Can you even enter the BIOS. If not, you're probably going to need to take the thing apart and look for loose or cracked parts. It's not that unusual for a shock to the motherboard to cause some chip to partially detach either. If you're not comfortable with taking it apart and can't part with it, your repair shop is probably the only option.