New M/B-CPU refuses to boot

[MR]

On Sun, Oct 31, 2021 at 2:54 AM Owen Thomas <owen.paul.thomas at gmail.com>
wrote:

> Ctrl-Alt-F1 will get you back.
>

Thank you, but unfortunately this was no help - the system does not respond
to any keystrokes once it has hung.

See update, below (different email).

Mark
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