Yes thank you for replying Leon .I also have the Intel driver assistance so all the newest drivers and everything are automatically installed but I'm pretty computer savvy and I never had problems with this until I actually had to reformat my hard drive .for some reason it would not allow me to install Windows 10 64 bit which was originally on there to begin with I don't know what happened it might have and Windows update will they tend to conflict their own updates of operating hardware with Intel operating software drivers and it could cause a lot of problems.i believe one reason or another might have corrupted the operating system somehow . the hard drive began giving me messages saying that it was write protected and in order to actually have it be able to use the the hard drive from legacy to UEFI I had to pretty much change the hard drive format to partition the drive how windows requires you to. had to wipe everything out and it was a real pain in the butt but I got it to work I loaded the operating system and for the most part it's been able to be used but now it just keeps on flickrring on screen and the source input with pop up in the corner of my TV screen as if I was select the source bottom on the TV remote. . . Wondering if it could be a hardware issue ? Maybe the video input card portion could be failing or somewhere on the board might start to go . This is the only nuc I ever had and I've had great luck with it I've had it for years and until most recently of the last update with Windows 10 is what started the whole problem . this caused my computer major issues and now it's pretty much almost completely unusable cuz I have no patience to have it flicker and try to work on it while it keeps on blinking .you can't even see anything that you're trying to accomplish . Although if you try to put it in the visual bios there is no flickering at all of the TV screen which leads me to believe it's not a hardware portion of the big that's is faulty. Maybe it's is the setting ? when the process of the operating system is being loaded there's just something that is causing an issue after the BIOS.. thanks for any further advice on this issue.
"I also have the Intel driver assistance so all the newest drivers and everything are automatically..." Before using Intel DSA, the Chipset Device Software, must be installed manually. Only then, the IDSA may install the correct drivers. In addition, your system drive should have GPT partition (rather than MBR) in order to boot from UEFI boot.
In order to get better information about your system, please download the Intel System Support Utility (SSU). Run the SSU scan (check "Everything") and save the results. The .txt file with the results please attach to your post.