We have one of the above (X12STH-SYS motherboard) that's refusing to PXE boot. It's connecting to DHCP and downloading the pxeboot file (according to tftpd), and the bios appears to be printing a message saying the boot image was successfully loaded, but it only stays on the screen for about 200ms before getting erased, so it's hard to be sure. Anyway, immediately after printing that message the system immediately moves on to the next NIC and tries to PXE boot from it.
I'm curious if anyone has run into the same issue. We're trying to figure out "why," and at this stage all we can think of is some setting in the BIOS is upsetting the machine to the point where it won't run the image. But I'm stumped. I've never seen anything like this before. Anyone have any ideas? --lyndon
