Question PC doesnt shut down anymore

[metter]

When I shut down windows, the OS shuts down, the monitor shuts down, but the hardware keeps on having power. No HD LED activity. It just lingers there doing nothing. To fully shut down, I have to long press the power button. I let it hang there for a while to see what happens. When I got back in the room, it had rebooted to the windows login screen.

This happened after installing a new motherboard.
any idea how to solve that?

 

[Phillip Corcoran]

Often caused by failure to reinstall Windows after changing the motherboard.

 

[metter]

Often caused by failure to reinstall Windows after changing the motherboard.

sigh
so no way around reinstalling windows then, heh? what a pain.... was hoping this wouldnt be it..