The observations of a black screen and automatic reboot would also be symptoms of a BIOS "refusing" to execute whatever is presented to it.
The downloadable Asus user manual for this motherboard does not provide much information.
From what I understand, many Linux distributions use GRUB as boot loader. And GRUB can chain load Haiku. Taking GRUB from one of the Linux distribution you know can boot on this system may provide an alternate route, albeit indirect, which could get you to Haiku booting on this system.