Have I bricked my N5?
I hope not!
Here's what happened.
I booted into Recovery, and then selected the one that gives you the Android on his back. I realised this was the wrong one; the menu (up/down volume) that gives you the option for reboot, ADB sideload mode, etc seemed unresponsive, so I held down volume up and down, and power, to attempt to reboot into recovery.
And from that moment on... nothing. The phone won't even turn on. No sign of life whatsoever, Holding down the power button, volume keys, short/long presses.... all combinations, and it's dead as a dodo.
Help! What have I done?!