Mac won't pass start screen
My Mac air won't pass the start screen when I go into recovery mode it says apple/support -2100f it when I hold shift and turn it on it turns if halfway through the greedy bar. When I was last on it there was a file named private and moved that to trash and the same file can't up in the Macintosh HD so I was replacing the private from the trash and cancel ed it then turned if my Mac now I can't turn it b on again
MacBook Air