poweroff command not working after memtest

[NiKiZe]

memtest pretty much cleanouts all of the memory state, as it seems from the error url the ACPI table used for doing poweroff does not exist, and that is likely due to memtest messing with things it shouldn't mess with.

Sorry I don't have any suggestions or workaround other then using reboot and chaining into ipxe again which could then do a poweroff with some serverside state and scripting.