Recent content by georgeb

  1. georgeb

    HP 4540s: "Product Information Not Valid" error message at system start up

    Hello, I have tried to unlock MPM with the instructions from step 6 and nothing really happens. The system boots regularly and the first message is that error with "product information not valid". My first try was with UEFI Native and second with UEFI Hybrid. Everything else was set to...
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