I want to run some test on hardware level. My goal is to create or find a way to control one computer from another down to BIOS settings changing.

For example:

1. Master computer sends a signal for slave to restart and opens BIOS settings dialog.
2. Master computer sends a signal to slave to change BIOS parameters and then restart.
3. Then slave fully boots up master starts up some software on slave.
4. Then software finishes operations cycle continues till certain conditions are met.

I know that I am looking for a complex thing but mainly what I need are correct keywords because now I am being flooded by BIOS configurations tutorials.

Main concerns:
Is it possible without using any custom tailer chip?
How can master monitor salve`s hardware activity?
How to let master handled more than one slave?
How what connections are needed to create this kind of setup? (cables)