Kinda frustrating. I looked on line, updated the Bios, changed the power setting in the Bios, unplugged the computer for a full work day. Haven't taken the Cmos battery out yet. it's keeping current info with the unplug. When it starts up after shut down it struggles. it spins up, stops, spins up, stops, then boots. SSD drive that's less than six months old. So for now I have left it on never sleep. It seems to be a known issue on ASUS boards, but none of the listed fixes have worked so far.