When you say with only 1 it works, is that the minihdmi-hdmi or the minidisplayport-hdmi (or both but only one at a time)?
Too me that looks like when you have a broken cable (or connector) or a too long cable. However since it works once you booted I guess we can rule that error out.
Regarding USB-sticks, I guess this happens even if you press F9 to get to the boot options?
Because otherwise the harddrive can be at first boot order which means that the bios never boots from your sticks (unless you press F9 and tell it to boot from which device).
Also the stick who doesnt work, are they USB2 or USB3 devices? I think I say some other post recently with someone having issues with USB3 sticks but USB2 ditos worked to boot from.
I can only get into the setup if only 1 cable is connected. It doesn't make a difference which one, but only 1. Both cables are working fine. It's only when i try to enter the setup i'm having problem of a scrambled image. Sometimes i don't get a scrambled image, but the screen with F2 to setup, F7 to update F10 for boot but it freezes. If two cables are pluged in.
F9? To enter the boot selection menu it is F10. Pressing F9 only wears out my keyboard.
I am not from Intel and I do not have that situation, but I have noticed somewhat similar reports from others. It presumably comes from whatever special detection/work that Intel changed after initial BIOS release to force the display to 1024x768, and may relate to your specific model monitor and/or the detail of how the cable coverts. Some people seem to get better results by switching the monitors and/or the cables (to some different style). Sorry that I don't have more specific answer for you, but I wanted to mention that in case it helps. For example what happens if you do MiniDP to your Samsung and MiniHDMI to your TV - and does your Samsung model say that it supports 1024x768 resolution?
Thanks for your reply.
I've seen many resolution changes going on on the TV. But why does it work with only 1 cable? If the TV had a problem with it, then it shouldn't work at all.
The odd behaviour of 1024x768 BIOS display in Intel NUC is most likely the prime suspect now.
It seems that they push out a 1024x768 square within whatever native format your monitor supports and your NUC is probably failing to correctly detect what your monitor really supports (perhaps due to the minidisplayport to hdmi or minihdmi to hdmi converter but I doubt its the converters fault). Perhaps this breaks even more when you got dualdisplays setup?
Before around BIOS 0026 Intel NUC (D5420WYK) behaved as expected, outputed a 1024x768 screen that would fill the entire monitor.
What about bios-settings regarding graphics where you choose which one is the primary display and such, tried to laborate with these settings?
Thank you, unplugging the miniDP to DP adaptor and just using the miniHDMI to HDMI plugged in means I can now get in to VisualBIOS.
BIOS version: WYLPT10H.86A.0038.2015.0410.1634