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.
I have the same issue to LED Sequence - VCCIN_AUX.
Power light does not turn on and I see these lights when I start the mainboard.
The side light stays green when power is plugged in. I tried resetting the mainboard and I see the same issue.
For some reason, the red light became green. Now, after the orange light, the post code starts with tree blue light and the rest is green. The computer is stuck in a boot loop. I can enter in the bios for 30 second before freezing.