I recently replaced my motherboard and CPU in my computer, and have noticed a significant issue with my motherboard. Every time I shut down my computer, powering it back on results in boot failure. Specifically, the computer will shut itself down while it is booting into any OS. Afterwards, it reboots and resets the current BIOS configuration to the default settings, and is only then able to boot into the current OS. I have found that this does not happen if I simply restart the computer; it will be able to successfully boot without resetting the BIOS.
(Note: This issue also still occurs even if I don't change any BIOS settings.)
At first I suspected that the CMOS battery may have been dead, but after replacing it, the issue persisted. I have also tested each stick of RAM in my system to make sure they weren't the cause of the issue, to no avail. I also highly doubt that this issue could be caused by bad cooling, as even running high-stress performance tests on my hardware does not cause it to shut down.
The only other thing I could think of was to disable fast boot in Windows, but this ultimately had no effect for me.
CPU: Ryzen 5 2600 >> Ryzen 5 5600x
GPU: MSI Radeon RX 6600 XT MECH 2X OC
Mobo: Gigabyte B450 Aorus M >> Gigabyte B550 Gaming X V2
PSU: EVGA 550w BR
RAM: TEAMGROUP T-Force Vulcan Z (32GB 3200MHz)