Mac Pro 5.1 blank or black screen no signal - Fixed

Описание

Mac Pro 5.1 stopped working properly after a download, here I will take you through what happened and what I did to fix this. Hope this saves you any time.
Please note I am no expert so please do not take what I say as gospel do your own research as well.

High Sierra can be a little difficult to find but search the internet and you will find sites that still have this.

Bootable USB High Sierra Installer👍
You will need a 16GB or larger USB Flash Drive (aka USB key). Make sure it's empty, because you'll be deleting everything on it during the process of making the installer.

sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MacInstaller --applicationpath /Applications/Install\ macOS\ High\ Sierra.app --nointeraction &&say Done