Can't Shut Down with WinKey-X-U-U -- Restart Instead

EdTittel · 17 Jan 2018

It's always something. But this time, it's something weird and interesting. Never ran into that one, before. USB definitely has its eccentricities. Glad you got it sorted.
--Ed--

Bree · 17 Jan 2018

beau said:

Well, well well . . turns out the culprit isn't Windows or the NUC, it's an older USB hub with a power switch...

Well I never :)

Have a look in Device Manager. A USB Hub generally has a 'Power management' tab, and that tab generally has an 'allow this device to wake the computer' tick-box. Maybe it was ticked?

beau · 18 Jan 2018

Device Manager > Universal Serial Bus controllers has a "USB Root Hub" and a "USB Root Heb (USB 3.0)" and each has, under Power Management:
"Allow the computer to turn off this device to save power", which had been checked, so I unchecked it
and
"Allow this device to wake the computer", which was greyed out whether or not the other was checked.

But unchecking the first didn't prevent re-start after WinKey-X-U-U.

So the easy thing to do is just not hit the power button on the hub until Windows has started, and always turn off the hub before shutting down. I just have to remember it each time