Sleep mode forces hard shutdown

[Bob@unraid]

Hello everyone, 

I just upgraded my system with a new mainboard (MSI H510I Pro WIFI) and a new CPU (i3 10105)

Everything works great except the sleep mode out of unRAID.
When I hit the sleep button in the GUI the system shuts down with a hard shutdown.
No WoL works and after the the start unRAID tells me "unclear shutdown detected" and wants to to a parity check.
It worked fine with my old combo and running the all time (unfortunately) is no option due to the high electricity costs.

Is there anything I can do / try to get it working? 

Maybe someone is using the same mainboard and can tell me there experience?

Thanks