I am also having the same set up with direct miniDP to DP connection, but my NUC never boots up properly, always a blank screen when the BIOS is loading and display only comes up after the OS loads and login screen of windows comes up.
I have not updated the BIOS as any change to BIOS setting is making the NUC un bootable.
Have you tried with different cable?
If you can access the BIOS, press F9 once you're there, to set the system to default settings and then press F10 to save any changes.
After that, you can try with a bios update, please download the BIOS version here:
You can follow the BIOS update instructions at the following link:
I changed the cable to mini HDMI from mini DP and was able to see the BIOS loading screen and all the boot options were visible.
I could not find a different mini DP cable other than from 'Cable Matters'.
Not sure if the issue is with the mini DP cable or the BIOS support for miniDP port at 4K resolution, as I dont have a monitor with DP in to test.
In that case I would recommend a BIOS recovery to see if you can recover the system.
You can follow the steps how to do a BIOS recovery here:
Please download the BIOS version here:
If you have followed the above recommendations and still have the same issue, your computer may have either a bad video output or monitor. The best method of determining this is to do one or both of the suggestions below.
- Disconnect your monitor and connect it to another computer. For example, try connecting it to a friend or family's computer or a computer at a service center.
- Borrow a computer monitor and connect it to your computer.
If your monitor works on another computer, it is safe to assume that the video card or potentially the motherboard in the computer is bad.
If another monitor works on your computer, it is safe to assume that your monitor is bad and should be replaced.
You could try testing with deferent RAM or testing the RAM in deferent slot and make sure is fully seated.