Computer won't automatically sleep (Win 8.1)

Okay..... I asked because there are external third party softwares that do the task of preset time for shutdown. Simply the term "auto sleep" is not an actual Windows setting and threw me off, but where you indicate in the picture is a place to achieve that in the various settings.

The report results you posted I believe mentioned two different USB multi-hub peripheral plug in devices and is why I asked - because having that seems a user would have like two, three, four or more devices plugged into the multi-hub. That would entail unplugging one at a time and try the shut down to see if successful, and may have identified the peripheral device that was blocking things.

The report results you posted as well mentioned the computer hardware did not support this. I would suggest then to unplug everything and get the computer back to like out of the box simple. First try without any internet connection and see if it will perform the sleep task. Then try it with internet connection, and then with the extras you added. The "hardware does not support this" may simply mean the mouse. Try going to Control Panel > Device Manger and right click the mouse and/or click Properties and look for the "Allow This Device To Wake The Computer". That may possibly be the "hardware not supported". Otherwise I do not believe this could possibly mean the Windows PC can not perform the simple task of a preset Sleep or Hibernate. Never heard of such a thing. The "hardware not supported" I assumed referred to one or any of the peripherals plugged in were the problem. That again would entail the hit or miss of unplugging all and plug in one at a time to see which one was culprit and look for a fix.

A few years ago there was one instance of Windows Vista not waking properly from Hibernation and a fix was issued. I have not heard any such thing with Windows 8 or 8.1 .

I would think it too strange that any Windows PC will not perform a most basic common task as preset time to shut down - sleep / hibernate - I mean that is one of the most basic common settings. Is there another or more than one User Account ? Make sure if there is any other User is that their account definitely LOGGED OFF. If there is more than one User signed in and like Switch User is used instead of Log Off - this may block any attempt to Sleep, Hibernate.