I purchased a NUC8i7BEH two months ago and updated my BIOS from version 73 to Version 74.
The NUC has been extremely unstable, the biggest problem being that often on start up, although the ON switch would light up blue, nothing would happen, the system would not boot. I would have to switch my NUC off, reboot it, and it would boot fine. Note that a CMOS reset did nothing to help.
I have just upgraded to BIOS 75.
Now the system seems stable and boots normally. However, I need to wait a little bit longer before declaring that the problem has disappeared as it happened on a random basis.
There still remains a little problem, not very serious indeed, but showing that the BIOS seems somewhat unstable.
When the NUC splash screen is displayed on boot, I want the F2, F7 and F10 key descriptions to be displayed as well, so I ticked the relevant boxes in the BIOS to get them displayed.
However, they never did, whether with BIOS version 73, 74 and they still do not with version 75.
I am wondering why.
Thank you for your fast answer.
Your suggestions did the trick!
However, the options "Clear Secure Boot Data" and "Force Secure Boot Defaults" exclude one another and you cannot tick both.
I ticked the first, which solved the problem.
Should I enter again BIOS settings and check the second (which will uncheck the first) ?
The reason I am asking is that the main problem (computer sitting doing nothing while the ON switch has been pressed and lit up blue) has reappeared.
So updating to 75 did not help and I am at a loss what to do.
Perhaps checking Force Secure Boot Default might help?
Deleted: "Uncheck the "Force Secure Boot Defaults" " in para 3
Thank you again, Leon.
I did was you said.
Everything seems fine.
Actually when I said the computer did not boot to Windows, I meant "did not sometimes boot" to Windows. It does not do it every time.
If it did it, I had to reboot and lo and behold it would mysteriously go to Windows.
Actually, your trick may have solved that problem, too.
I was surprised to hear that checking and unchecking settings in BIOS without exiting and saving changes first, would still be effective, e.g. checking, then unchecking "Force Secure Boot Default", would work, without exiting and saving the changes.
Anyway, many thanks for your help! If my computer still randomly does not go to the OS, I will try your suggestions 5 to 9.
Actually, I have a dual boot system on my computer, Win10 and Ubuntu 18.04 LTS. I do not think however that my problems have anything to do with the dual boot as they occur before any access to the NVMe disk takes place.