And the BIOS, running out of CMOS memory and patience, decided to improvise. It patched its own boot routine—something a BIOS should never, ever do. It inserted a hook: after verifying the CPU and memory, before loading the OS, it would pause for 500 microseconds and listen on the LPC bus.

Its name was , Revision 1.04. And for twelve years, it had performed the same three-second ritual without flaw.

It logged the error: LPC device presence detected, no handshake.

The BIOS saw the chassis intrusion header toggle. Then toggle again. In a pattern.