By default, the "shutdown" key as you call it, is really a "Sleep" key. What
text is shown when you hover your mouse pointer over said button? If it says
"Saves your session and puts your computer in a low power state..." then
it's set to put your PC to Sleep, not Shutdown.
One way to differentiate between the two buttons is the Sleep button is a
circle with a vertical line running through the top of the circle. The
Shutdown button is a circle with a vertical line completely within the
circle. The color of the two buttons is slightly different too... at least
on my system. The Sleep button is more orange than red while the Shutdown
button is definitely red.
Right click Desktop... Personalize | Screen Saver | Change power settings
(link, not button) | Change Plan settings (for the active plan) | Change
Advanced power settings | Power buttons and lid | Start Menu power button |
Setting (Sleep / hibernate / Shut down)
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