Replaced Battery But Keyboard Wont Work

Hey guys I followed this Youtube video which shows how to replace the battery. I only touched the connectors mentioend in here. It appears that all the cables were for the battery and touchpad. I didnt touch the keyboard, why does it not work?

I can turn on and hold power but nothing else registers. More so I cannot reset SMC or PRAM or NVRAM which requrie key combiantions because on boot/bios screen my key presses do not register. I tried an external USB keyboard which works fine but trying again trying to reset SMC or go into Recovery mode has failed.

Any advice would be great!

Edit:

It appears I damaged the trackpad cable. But I did not touch nor go near the keyboard cable that is on the left of the chassis. Does the trackpad cable somehow affect the functionality of the keyboard cable?