We have been working in this issue at the following thread Intel NUC DN2820FYKH can't access BIOS
However, would you please let me know if you remember to have had “fast boot” enabled on BIOS?
If this feature was enabled on BIOS, the NUC will boot directly to the operating system.
In order to be able to access BIOS please try the following:
- Shut down the NUC
- Press the power button, but once you see it light up please press it again for about 3 second until the light turns off
- Press the power button again. It will show the BIOS options at the right corner of your screen.
I just finish following up this procedure and I was able to access the BIOS without problems
Golzio before suggesting you to replace the NUC I would like to try one more thing.
Would you please try to roll back the BIOS to the original BIOS version 15? https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23498
Thanks Sylvia for your time,
I made the rollback to the original BIOS version 15 and after that I was able to access the BIOS itself.
Unfortunately this bios version has a lot of trouble and my windows 8.1 didn't start after this bios update.
For this reason I flash again last BIOS version 41 and my OS start again.
Just a question, do you think my NUC is defective or my issue is a common problem?
Alessio, this NUC has 11 BIOS versions therefore I think it will be necessary to install at least 4 versions before flashing the latest one V41. Intel® Download Center
So please roll back the BIOS to version 15 again and then try installing other versions.
I recommend you to check the BIOS Update Release Notes on this URL. You will be able to see the fixes and features included on each version. http://downloadmirror.intel.com/24421/eng/FY_0041_ReleaseNotes.pdf
I would also recommend you to follow the F7 method when performing the BIOS update Desktop Boards — BIOS Update Instructions
I am having the exact same issue than Alessio.
But I was able to access the Bios after having downgraded to 0015.
Then I sequentially upgraded to
* 0025: Bios access OK
* 0028: Bios access OK
* 0034: Bios access OK
Then for 0037 & up, screen is black when I try to access the bios (I tried many many different monitors, tvs, hdmi cables, hdmi to dvi cable too on an old dvi only monitor)
For now I'll stick with bios 0034, but I'm hoping that this issue will be resolved with the next bios update...
The problem is with BIOS version 0037 and 0041 so I recommend skipping those and continue with the rest.
Update the BIOS to version 0038 and sequentially update to BIOS version 0052 but skip 0041.
If you have problems with another BIOS version then roll back to the one where you did not have problems with and continue updating to the following BIOS version.
thanks for your reply; I have successively flashed the following firmwares:
0034 -> 0042 -> 0034 -> 0045 -> 0034 -> 0047 -> 0034 -> 0048 -> 0034 -> 0050 -> 0034 -> 0051 -> 0034 -> 0052 -> 0034
And same black screen issue when trying to access the bios with the F2 key on every firmware strictly above 0034...