All partitions wiped, USB Debugging was not enabled, ADB and fastboot can not see Nexus 5 I got my shiny new Nexus 5 a couple of weeks ago and decided i wanted to root. I rooted using fastboot on my Ubuntu box.

I then installed MultiRom and from there I installed Ubuntu touch.
Everything was going fine and dandy until I changed the kernel to CM 11 and rebooted to apply the changes. It didn't boot so I opened up my TWRP recovery that multirom had installed and decided it was a good idea to erase all the partitions to try and fix this kernel issue. That didn't work so I plugged it into my computer and ran

fastboot reboot-bootloader
Waiting for device ...

It never rebooted.
I also can't do anything with either fastboot or adb when before it worked fine.
TWRP works fine and i can navigate around in that easily. MTP will never activate. I didn't have usb debugging enabled. My bootloader is unlocked.
Please Help
@Hellreaver
Actually: Not yet a brick.
I managed to install a custom ROM along the lines explained here:
https://www.youtube.com/watch?v=6m5pJSYm19I
Flashing from the USB stick was still possible, since I had TWRP 3.3.1-0 already installed on my Samsung S6 G920F.