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  1. alenxba

    SOLVED BlackScreen after validating root dmg

    After booting "Install MacOS Monterey" and getting some fast messages after "validating root dmg" - no video input on monitor. USB 2 Ports not working, getting "failed to get local signing public key e00002bc", only usb 3.0 can boot up to "validating root dmg". PC Specs (Acer Veriton ES2710G)...