Intel X550 Issue - SIOM Module

[NiKiZe]

If you only have #!ipxe in the file then that will run and ipxe will exit
If you have any command in the ipxe script that fails then the script will exit (unless you have a || handler)
If it is not a valid script then it will be tried as a binary which most likely fails and ipxe will exit.

Again the minimal basic script you should test is
#!ipxe
shell

Since you have not provided the script you are using, or tested the above simple one it will be hard to help you.