How do I install a new rom from scratch on my Galaxy S5 (phone totally wiped)?


AC Question

How to install new rom from scratch on Galaxy S5 (phone totally wiped)

I rooted my phone using odin. And I flashed TWRP onto it. I tried installing a new ROM using Rom Manager and it didn't work.
So i tried using the TWRP recovery to install new ROM zip and it failed saying couldn't mount system.
I wiped the phone and now the computer won't see it and it won't boot into recovery.
Any way to start from scratch?
The ROM zip is on the SD card.