Device specs:
Intel NUC D54250WYKH
Intel desktop board D34010WY - BIOS Version 0025 - 03/03/2014
8GB RAM
120GB Intel SSD
What I've done:
1) enabled UEFI boot in Visual BIOS
2) changed boot order in legacy devices to USB first
3) ran W8.1 Ent setup
after 1st reboot during the setup NUC has hung with "BIOS has detected unsuccesful POST attempt(s)" message.
recovery steps tried:
1) F2,F7, F10 is not working
2) removing the jumper from motherboard gives me only first 2 options out of 4 found in the manual
http://downloadmirror.intel.com/23089/eng/D54250WYB_D34010WYB_TechProdSpec05.pdf
3) cannot launch Power Button Menu - no "short beeps" coming from the device
Keyboard is working (I can choose options when I remove the jumper)
Visual Bios was visible and working.
please advice - I was just starting to like this NUC
Marcin