How to resolve Win 11 won't completely shut down and won't restart?

worked for me also, just uncheck allow the computer to turn off this device to save power"

thank you

YES IT IS

After an extensive search and many non-working solutions...

I've had the same problem for months. Have to hold down the power button to make the computer shutdown on its own.

The fix is a surprising one...

Device Manager -> Universal Serial Bus Controllers

Go down the list and any of them that has a "Power Management" tab, uncheck "Allow the computer to turn off this device to save power".

At least this worked for me. Apparently its the USB controllers preventing the proper shutdown for some reason.

Also worked for me. Great, thanks!

This is where I have arrived at after many hours of trying loads of fixes. My Lenovo Carbon X1 C6 died after it did both win 10 and Lenovo updates on the same day. The only way I could get it to function at all was via a clean install of Win 11 Pro from a bootable USB. It works, after a fashion, and both Windows and Lenovo updates say it is up to date as I have run all the updates and troubleshooters that work. However, the following still don't work.

1. Shutdown by any software means does not shut it down. The power button light stays on, and the laptop battery drains in the background, if no power lead is attached.
2. Similarly Restart does not restart it. It tries to, and then hangs at the pont where the tiny horizontal cursor flashes top left of a black screen. It never gets to Windows. CTRl ALT Del works at this point, but any restart gets back to here.
3. Long press on the power button does not turn the power off. Not 10, 150, 30, 60, 120 seconds, with power connected or not. The power stays on.
4. Consequently the only ways I can physically turn it off are a) Remove the case and disconnect the battery, or, b) use the pinhole reset button on the back of the machine. I have used b) so often, that I've had to make a paperclip pin switch pusher, now semi-permanently fixed to the back of the laptop with masking tape, to act as an easy switch.
5. The USB wireless mouse has a mind of its own, with the pointer moving and self-clicking randomly shortly after Windows 11 starts up. This behaviour actually disappears after 3 or 4 restarts.

Back to the plot. When I try to uncheck the "Allow the computer to turn off this device to save power" for any of the listed items that have this option, the laptop hangs. Nothing works. The only recourse I have is to remove the power and then b) which, so far, always restarts Windows.

I've just made a Linux Mint USB with persistence, and a Win 11 USB, both bootable, so I can always get the laptop to function, but there are still these frustrating seemingly USB related issues which I can't fix. Any advice most gratefully received.

thanks - Roger
P.S if this is in the wrong place, apologies. Please let me know where it should be. Thanks.