On first setup of my Pi 3 Model B I followed instructions to install NOOBS 2.4.5, got a good power cable, swapped the HDMI TV cable from my little Lenovo linux box to the Pi for setup, and ... nothing. But that's where I parted ways with the instructions.
The only keyboard/mouse handy is a Logitech K260 Wireless Keyboard & Mouse (happily shows up on the compatability list ), but they are dongle - not wire - USB. Also, since our hub is all the way on the other side of the room I can't run cable over until kids are asleep, so I'm not networked. I just wanted to test...
But the Samsung TV isn't detecting much of a signal; when I switch "Source", however, it DOES identify this HDMI-CEC connection as "raspberry".
I'll try to make this a less headless boot later with the NIC plugged in, but wondered how many obvious errors I'm making here.