Hello Sylvia,
thanks for reading my post.
I have been using my NUC every day and I woke it up and suspend every day during half year without any problem.
My 1st NUC went dead after 6 months of every day working and 2nd NUC after 5 months. Every time it was after suspend command.
I remember that in first case finally the blue LED was blinking but I was unable to wake it up by pressing power button. So I disconnected it from power line and after a while reconnected it back. But still unable to switch it on. No BIOS screen, no blue LED, only network LED was blinking.
It looks as it happened quite randomly during ordinary usage.
Now I have my 3th NUC and I fear to use suspend mode. But it's boring to boot every time I use my pc...
Unfortunately I can't remember what exactly I set up in BIOS. I am sure I did NOT use overclocking. Mostly I used default settings. I thing (99%) I had the same settings in "secondary power settings" as in your picture.
I use surge protection (Belkin SurgeMaster Maximum M823), HDMI monitor, USB keyboard and mouse connected via USB hub on LCD monitor, ethernet, SSD+magnetic HD.
I always update BIOS to the newest version. My second NUC went dead with BIOS ver. 0033.
Regards,
Antonin