It is now safe to turn on your computer...
I remember being so conditioned by Win95 to push the power button after the PC had shut down.
When we got our first Win98 PC (with a newfangled soft latch power button) it would briefly flash up the "safe to turn off" screen before cutting its own power.
For months I'd go to "turn it off" then have to wait for it to do its boot cycle (ah the old RAM check...) before I could shut it down again. Eventually learned I could hold the power button to force it off.