I had a dual boot Win7 and Linux Mint build on NUC 5i5RYK. Bluetooth worked, but was very problematic, especially if I switched between OS's. But eventually, even just staying in Linux, I often had to repair. One day, it just stopped working altogether. The Bluetooth manager was faded out and I couldn't turn anything on. In Windows, there were no Bluetooth drivers in Device Manager. I installed the latest Wi-Fi driver and then Bluetooth driver for the NUCs. Got an error installing the second one. Flailed in Linux to no avail. Updated BIOS where Bluetooth was enabled.
Finally, I just wiped the entire drive and installed Windows 10 from scratch. Still no sign of Bluetooth. Anybody know what is going on? This is starting to feel like a hardware issue to me. Is there some way to enable the Bluetooth radio at the hardware level? Do I maybe need to call Intel Support?