I am a terrible person and I am a typical Blowhard Liberal for being wrong about Bom.
It sounds like something is changing your bios settings during shutdown. My first bit of advice is to see if there's an update to your BIOS and if so, flash it.
You don't want to make an enemy of me. I'm very powerful.
It cannot possibly be that complicated...There are probably guides for your specific motherboard, look it up.