I am not from Intel, but it seems you have various problems. For non-display on screen, it sometimes helps if you can try a more direct cable to a more traditional computer monitor. For example if you are running HDMI through an Audio Visual Receiver into some input of a TV, try plugging from the NUC direct into something like input #1 of the TV. You can also try the Power Button Menu if you haven't tried that (from the power off, you hold down the power button for a very specific amount of time around 3-4 seconds then release to get a menu - if you connect something like headphones to the audio jack you probably hear three short beeps around the three second point and that is when you release). For the SSD not being detected, do you mean the mSATA or do you have the H model and are trying a 2.5" SATA (if so there is a chance that you might need a daughter card replacement)? For the BIOS recovery, it seems like maybe the NUC isn't detecting your .BIO file on the USB - do you have some different flash drive you can try - maybe older, maybe one you can try reformatting some version of FAT.
Thanks for your response.
I updated the BIOS using another flash driver, I thought that this will solve the issue of the SSD not detected but it did not
for the SSD I am using an mSATA, the funny is that it is detecting another mSATA but not the one that I needed.
Fur the screen display, the BIOS update did not resolve the issue, thought that I saw an answer that it would and I dont have another screen to test with
For the power button menu, can't used cause nothing is displayed on my screen
If another SSD is being recognized in the NUC means the SATA connections are working fine and the problem may be related to the NUC you are trying to use.
For the display issue make sure the cable you have is not broken and it is seated correctly into the port. Besides this, make sure the output configuration in the monitor is set accordingly to the cable you are using. I mean to say that if you are using an HDMI make sure the output on the monitor/tv is also set to HDMI.
Something else to look at regarding boot capability: The SATA port used for the HDD/SSHD is Port0, whereas the SATA port used for the mSATA SSD is Port1. You should check BIOS setup (Visual BIOS) and make sure that the SSD is ahead of the HDD/SSHD in the boot order...