Hello. I cannot get any response out of my NUC8i7HVK after configuring secureboot on arch linux. I created/enrolled keys and signed GRUB by following the instructions here. After enabling secure boot in the bios, all I get now is a black screen. No video output and no response to keyboard. Seems to be reading the disk.
I followed the instructions here for prompting the power button menu by either holding the button until it turns amber or removing the security jumper and installing a bios off of USB. Nothing happens. Help me please.
See the attached video I've prepared for you. On this video you may see the LEDs activity during boot process, with only Power Supply connected:
So, if you see the LEDs act I on my video (i.e. the red LED is blinking), it means that your NUC is working, passing the POST and booting from drive. You can't see the video output. Use an other monitor (for example TV if you don't have other computer monitor ). Use other cable and other video output.
The problem in your NUC started after configuring secure boot on Linux. We are not supporting Linux O.S. (which is not supported O.S. for NUC8i7HVK) in this forum and at least my knowledge in Linux is limited. It will be wise to ask question Archlinux community how to disable Secure boot and UEFI.
I work for Intel Customer Support and after reading this post and all the recommendations kindly provided by Leon (thank you for that), I would recommend that you replace this unit.
Also as Leon mentioned, Arch* Linux* is not supported by Intel, it may work as many other unsupported Operating Systems but we don't know if situations like this may happen and we have no plans to further explore this Hardware/OS combination.
If you need further support to have this unit replaced, please reach out to our customer service to evaluate possible replacement options. Please use either Chat or Phone options, see here: https://www.intel.com/content/www/us/en/support/contact-support.html#@7 and make reference to case 4557787.
We would like to know if you were able to follow Ronny's advice to contact Intel® Customer Support. If you need further assistance please let us know in order to evaluate possible replacement options and please provide the contact information details we will request through a private message.
Intel Customer Support Technician