unbootable 7.1.2 amd64

[Kathe <kathe%sdf.org@localhost>]

i am trying to get netbsd 7.1.2 amd64 to run on my thinkpad e470.
failing with "acpi" and "no acpi" options. "acpi" option is a no go.
"no acpi" option goes forth and stops at;
boot device: <unknown>
root device:
it doesn't do anything, but just sits there rather smugly, mocking
my helplessness. :)
is there anything that can be done to have 7.1.2 installed and run
smoothly? or is it that i had better wait for 8?