Hello and welcome to the forum.
First of all it sounds a bit like perhaps, your machine isn't really shutting down completely.
You should probably test that first and be sure.
From an elevated command prompt (right click the Start Button and choose Command Prompt (Admin)
type
shutdown -s -t 00
hit enter
That should shut down your computer completely.
See if it auto recovers from that state.
If not then you need to inspect your power settings / advance power settings options in control panel and make sure those settings for the power switch are set correctly.
Additionally perhaps take a look under "Sleep" and see if you have "Allow wake timers" enabled?
Try disabling that and see if that stops the problem.
Lastly in Control Panel, Power Options, on the left side of that screen where it says "Choose what the power buttons do"
Double check and confirm that those are set correctly.
AND
Then near the bottom of that page if you see a reference to Fast, Quick, or Rapid (Boot), not sure of the wording exactly......
Some people have had to use the link at the top "Change settings that are currently unavailable" and uncheck that box to get their machines to behave correctly.
Personally, I would save that for my last (final) attempt at resolving the issue.
