How long have you had it? Was it previously working?
I’d contact support.
~edit~
I see only a couple other forum threads that mention an VCCIN_AUX error, but they don’t seem to have anything that might apply to you. I see from your other thread that you have a 12th Gen, so the CMOS battery issue mentioned in one thread should not be your issue.
You could try resetting your mainboard anyway. It seems to help sometimes with random issues.
If you do, be very careful with the coin cell battery, I understand the holder can break if too much force is used.