Yep, that worked 
That sneaky motherboard even noticed after a CMOS reset that the CPU had changed.
So there must be some kind of non-volatile storage that logs what CPU was paired last with the motherboard…
Thank you very much! For some reason I never thought of just plugging in a different CPU.
I’m very happy this solved the problem for you ! Very nice that you had a different CPU at hand
And to give a definitve answer:
Removing the BIOS battery and wait a minute is enough for a proper CMOS reset.
Note the different message from the UEFI when you do a CMOS reset without changing the CPU:
Excuse the newb question , but am I allowed to post external links ? Or is there a private-chat feature that i haven’t noticed so far ? Wanted to provide some links to some guides on how to deal with bios flashing
Probably a bot-prevention thingy.
Maybe a mod can “unlock” your account since I highly doubt that a new bot technique is to sincerely help out on the first day and then start the counterfeit drug advertising on day 2 
Virtue-signaling @wendell to relay that bidding 
Decode this hex code and you can find all the details i wanted to share. This allows for even version downgrade if memory serves me right.
Look at this section “How to dump the BIOS Region and to flash a modded AMI UEFI BIOS
by using the Flashrom tool”. Pay attention to all steps. I successfully flashed roms using that method.
68747470733A2F2F7777772E77696E2D726169642E636F6D2F743435356631362D47756964652D486F772D746F2D666C6173682D612D6D6F646465642D414D492D554546492D42494F532E68746D6C
This is the last time i flashed a modified bios using the method described.
@d3vnul I just bumped up your trust level manually, you should be able to post links now.
Yep.
Hiya,
One more update , as you mentioned about bios flashback , i had one more look today and i noticed it has this feature.
If it really had USB Flashback (unofficially) it would be nice.
One question remains: How do you trigger “USB Flashback”, then? Normally there’s a physical button somewhere on the motherboard.
Step 1) : Copy renamed BIOS file to root directory of USB flash drive
Step 2): ?
Step 3): Success
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