Question Memory PMU Training error - but still booting

Oct 17, 2019
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Hi!

I have a problem that started when I switched from the Corsair H115i Platinum to the AORUS Liquid Cooler 280.
(its just a temp switch, going to come back to the Corsair H115i Platinum. doing a small check for a friend)

suddenly I have this "Memory PMU Training error at socket 0 channel 0 dimm 1" when I boot.
but it's only on for about a second, then it just says "Memory PMU training" for another second, and then it boots into Win.

So, I'm trying to understand if it really has anything to do with the change in the AIO cooling somehow?
if not, what could have happened?
and since I have no problem booting - why does it keep happening?

first:
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second:
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