The bios memory and two SSD 500GB hard drives, one M.2 and one SATA, are all recognized by the bios. I have a MS Windows usb installer from MS.
The first time I attempted to install windows it took a little time for the OS to copy. Now it speeds through like it's already loaded. Each time I get the select 64 or 32 screen. I select 64.
Then I get a message that the winload.efi file is missing or corrupt. Telling me to reinstall from a source installer.
What am I missing?
Get a USB stick that is at least 8gb. Go to another PC (not a mac or linux machine) and format the usb stick as FAT32.
Then, go here and use the Microsoft tool to make the install media on the USB stick. https://www.microsoft.com/en-us/software-download/windows10
Then, make sure the nuc is in UEFI mode. Then, boot the stick using F10.
Select custom install, and delete all partitions on the drive you intend to use as the boot drive. Continue with the installation.
I'll add some more detailed instructions to Al's advice how to install Windows 10 after you have the installation media created with Microsoft Media Creation Tool: