I don't actually have a NUC, but I read a post somewhere else suggesting that this can be solved by plugging something (e.g. a flash drive) into one of the USB ports -- worth a try.
There is a new bios version for this unit that you can try, you can download it here:
Please see F7 BIOS Update Instructions for Intel® NUC
"...this can be solved by plugging something (e.g. a flash drive) into one of the USB ports..."
Thanks BobRay. I gave this a try. It did nothing for me. I have an external HDD always connected, which was
there when the problem arose. I tried a USB 3.0 flash drive, just in case. It didn't help.
I'm considering a clean install of the OS & drivers.
I have updated the BIOS to the version 0044 and I did not experience any restart issue after I shut down the system.
Is there any particular setting that you’re doing in the BIOS or it is under default settings? Try setting the bios to default settings if it is not, just access the bios press F9 on your keyboard and then F10 to save the changes.
I’m sorry if you already try all these steps.
Does the system restarts right after you shut it down or it takes some time after you shut down the unit?
Try reinstalling the chipset driver, the Intel® Management Engine and all the rest of the driver if you wish to try, you can download them here: https://downloadcenter.intel.com/product/89189/Intel-NUC-Kit-NUC6i3SYH
I have the same probem with my NUC5i3RYK. I am running Win10 through and external hdd. When the NUC is shut down the hdd won't stop. My bios version is
RYBDWi35.86A.0356.2016.0506.1355. I tried the updates recommended by Ivan and disable all bios settings that I suspected to be related to usb power management.
Please help! What did I miss? Do you have further tips?
Also, the device always restarts after shut down.....why....
It is normal behavior that the hard drive stays on if the NUC is shut down and you have the hard drive plugged into the yellow USB port, this is because the yellow USB port provides energy even though the unit is off, for that not to happen you will need to plug the hard drive into a blue USB 3.0 port.
I suggest you to try another USB port to see if the issue remains.
I have the same issue on NUC6i5SYK. OS Fedora Linux, BIOS 44.
The first time shutdown doesn't work, the second one does. After the first shutdown NUC stays off for about 3-4 seconds and then boots again.
The BIOS settings are all default. I tried to disable IR wake and wake on LAN, but it didn't help. Any suggestions on how to fix this?
Just as an update....
I updated to BIOS 0044. The problem persists.
I noticed the restart is every other day, and only once. Thus, I shutdown the machine and 3 seconds after the light
goes out, it comes back on. I shutdown again without a problem. The next day, it shuts down fine. The next day I get a restart, etc.
A couple of weeks ago, I didn't get the restart when I used Alt-F4 from the desktop to shutdown. I've used that
method to shutdown for 14 days and had no problems.
Maybe this restart issue is only when using the shutdown command-line. ???
It appears the restart only occurs when I use the shutdown command.
The standard way (GUI) to shutdown the machine works fine. I'm also able to run this script:
Since I don't NEED the shutdown command, I guess I'll just avoid it.
Thanks to all for your time.