Hey there, its funny , i tried everything , nothing worked so far until i saw @SensitiveMeatball comment ... i was decided that i will sell it as paper weight or for spare parts, but as last thing to do before i proceed was to check if it will works in case i will unplug webcam cable as @SensitiveMeatball mentioned .... well suprisingly nothing happened when i unpluged webcam cable ... but i decided to not wrap it up right away and i also unplug screen connector, so i started macbook nothing really happened just expected -- i have blacksreen ... then i plug all cables back to board and guess what .. macbook booted up normaly with working touchbar also touch id is working , everything like brand new macbook ... one thing which is not working is webcam even cable is connected to MB... but i really do not care about it as i have finally MacBook which is more or less working nice and smooth.. SO to all of you guys i recommend at least to try this out , I was convinced that it can not be repaired other than by replacing MB ... Thanks alot @SensitiveMeatball , i dont know if its some magic/fortune/randomness whatever its , my macbook is finally running thanks to your idea with webcam. My Macbook spec: Macbook pro 2017 15" Model A1707