PC Shutdown but CPU up-time still ticking

windows 10 uses a power mode called Fast startup. INstead of Turning PC off at shutdown, it saves Drivers + a copy of windows kernel into ram, and other things into hibernate file, and puts PC into a hybrid hibernate state, so when PC is restarted, its half loaded already and speeds up boot on hdd.

So yes, your PC is never off with Fast startup on. Only time PC is off with Fast Startup on, is if you restart it using the command in power options. And that is briefly during the restart window.

• It doesn't help on systems with ssd. It is useful if you only have a hdd though as it helps a little.

• It doesn't help if you have drivers that don't recognise the mode, can cause weird errors.

• It doesn't help if you get lots of power outages and need to unplug PC as that is seen as an unexpected restart since pc isn't actually off.

To turn it off,

right click start

choose power options

under Related Settings, click Additional power settings

in far left column, click Choose what the power button does

next to blue/yellow shield, click Change settings that are currently unavailable

untick Turn on fast startup

save changes and exit