Keyboard, Trackpad, and USB unresponsive on ANSI PBP

[captainstormy]

The first step is to determine rather it's an issue with the software or hardware on the PBP.  I'd flash a Micro SD card with another OS on another computer and boot to that.  See if you have the same issue or not.  If everything works normally it's a software issue with the other OS.  If not, there may be a hardware issue.

Assuming the other OS on the micro SD is fine (which I would expect it is) I'd assume something went wrong with the manjaro install and start over there.