This guy (the socio-path hacker) is so good that he's managed to
install keyloggers ON THE BIOS of the two machines that we still have
left, sitting in our closet.

That's another question.

Does the BIOS of a machine BUILT for Linux work IN THE SAME WAY, as
a 'Windows' bios?

Let me give you an example Graeme.

I bought a really NICE HP Windows machine. He's corrupted the BIOS
(by hiding a keylogger IN THE BIOS itself) and HP will not let you
put a new BIOS on one of their machines, you have to mail the machine
TO THEM, and their techs will do it.

The only way to get around this is to put a NEW mother board into the
HP, that costs also as much as the PC itself, and it seems stupid to
try to fix a computer that has been torn up, in such a way.

It's just cost prohibitive.

So, if I bought another machine designed only for Linux, would there
be a BIOS menu similiar to the one for a Windows machine?

Thanks so much for your time and energy in answering my questions.