Extreme 9ac Power Issue with Sleep

My 9ac was installed just a few months ago, with a fresh install of Win10-prof-64bit. I had initially done some bios tweaking. Last week when cold booting the BIOS defaulted all BIOS settings. Come to find the battery had died, so I replaced it, and now keeping BIOS settings seems stable.

At that time using the "sleep" selection from win10 gui (see pic), win10 would go down into sleep mode (not hibernate) and the PC would still stay running. With a hit on keyboard it would wake very fast from sleep.

Now when I use "sleep" win10 appears to sleep, but immediately after that the board power cycles and the system wakes from sleep.

I checked the devices allowed to wake the system and only the keyboard is allowed, but even so a non-wanted wake device should not cause the board to power cycle when win10 goes to sleep, the PC should remain "on" when in sleep mode.

So I maybe perhaps don't have the correct power settings in the BIOS (beta v2.50) to properly support win10 sleep mode.

Can you point out proper BIOS power settings to support sleep mode.

I think I found the issue.

While playing around with a "sleep" shortcut (using rundll) I had turned off hibernate. Interestingly enough if hibernate is turned off the sleep mode will do a sleep-wake w/o user input.

So, I reset my hibernate using powercfg

POWERCFG /HIBERNATE ON
POWERCFG /HIBERNATE /SIZE 0
POWERCFG /HIBERNATE /TYPE REDUCED


Now when I select sleep the system does a sleep --> off. I am not sure if this state is an actual sleep or hibernate because I hear a load relay click and the case fans (that have led's) turn off. When I wake the system it returns to login screen very very fast, but, my system uses all very fast SSD drives, so it's hard to say if its waking from a sleep or waking from hiberfil.sys. From MS docs resuming from a hiberfil would look like a normal boot but then returns to last state, but I do not see a normal boot, so perhaps it is waking from stateful powered RAM.