I have had my three DN2820FYK's for about a week now, and after having got the memory issues straightened out have gotten Windows 8.1 installed on all three and Plex Installed on all three to use as HTPC's. Here are some issue that are really annoying that i have discovered so far that are really annoying.
1. On one of my TV's, if i had a NUC connected to it via HDMI and any USB Device plugged into it (keyboard/mouse) it would get stuck at the Intel NUC Post Screen (Press F2 to Enter Bios, F7 Update Bios.....) I was pulling my hair out over this one, if i unplugged all USB devices from it it would boot into windows just fine. I then plugged the same NUC, with the same keyboard into another TV and it booted up fine with the keyboard attached. I then took plugged it back into the original TV and it would not boot again with a USB device attached to it. I plugged it into another TV again and was able to F2 into the BIOS, i looked around and saw where Fast Boot was disabled, as well as SecureBoot. I enabled both (and checked the box to install the intel key for secure boot). After doing both of those the computer will boot into windows just fine with a keyboard attached. However, how in the heck do you get back into the BIOS after you enable Fast Boot and/or Secure Boot? There is no longer a screen that says "press F2 to enter BIOS". If i plug a keyboard/mouse into the NUC they now do not even turn on until Windows starts to load. In windows i went into PC Settings and Recover and there is no option to do an advanced start up like there are on my other Windows 8.1 devices. I also tried running "shutdown /r /o" which should do the same thing but it says a parameter is incorrect. So my does enabling Fast Boot/Secure Boot in the BIOS disable you from re-entering the BIOS again? That would not make since.
2. My second, and more annoying issue is that if the NUC is completely powered off, and you power it on BEFORE the TV is turned on, the screen resolution gets messed up somehow. I have Plex (home theater application) set to auto launch after windows auto logs in and if the NUC is powered on and comes up before i turn on the TV then something happens to the resolution and the Plex Application's resolutions gets messed up and is is half way off the screen/on the screen. This never happened with my 3 Zotac Zbox's i had, i had the same setup on them (running plex, Windows 8.1, HDMI connectivity). I could power them on without the TV being on, then when i turned on the TV it was there ready to go at the correct resolution.
3. No DTS-MA/Dolby True HD, i have seen this posted here before, but if i go into my sound settings i see no HD formats listed under "Supported Formats" I am sure that is just a driver limitation, hopefully it is fixed.
Has anyone else had any of the issues above? I really need a solution to number 2 as that is the most annoying, it makes me really wish i didn't "upgrade" my Zotac Zboxs to the NUCs yet. I feel as if i should have waited for it to mature more. I guess that is a pain of being an early adopter though.