![]() If you have a firmware password, that will have to be disabled first. Disconnect all other hardware from the problem Mac.Yes a PC keyboard will work also, the Windows logo key is like the command/Apple key usually as Option/Alt the same.If you have a wireless keyboard, you likely will need to use a wired/built-in one to perform the at boot commands!.A systematic manner to get a booting machine and then work down through Applications and User account issues.The process of elimination is designed to narrow down your problem and expose unknown ones, fix it all yourself. ![]() Only Step #17 and 20 are harmful (to your data) and marked.
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