When the sytem detects an issue, it usually trows up an error like the one in the picture (not the same system) and asks you to reconfigure it.
"if there actually is a pattern: how many times did you try and did you observe exactly that behavior every time, with no single exception?" Well, it happens every time I try to start the system, it turns on, and does nothing, reset button does nothing, holding the power button turns it off, and then it starts just fine on the next attempt. This isn't a power cycle like ram training or failsafe, it just turns on and does nothing untill iI force it to turn off. There were some exeptions but they are rare. Exiting the bios also breaks it.