HI Draclvr and all.
I could be wrong but I believe I read somewhere that with Windows 10 even if you choose the
Shut Down option what it really is, is Hybernation mode and not really a total shut down. Please let me know if this is wrong or not.
This is an optional setting. By default it may be set to hibernate in order to make it look like Windows is booting faster. Hibernating instead of completely shutting down exists in both Windows 8 and 10.
Here's a thread where someone tells how to change the option
https://superuser.com/questions/1096371/why-is-windows-hibernating-when-i-shut-downHere are some other instructions I found for Windows 10, mainly to do with the power button:
Select the Start Window icon in the lower left
Select Settings
System
Power & Sleep
Additional Power Settings
Choose what the Power button does
Change Settings that are currently unavailable
Under Shutdown Settings, choose what you want to happen when you use the Power button, then Save Settings