Hello, I have a machine that one day showed an error "Serial number must be entered". After reading multiple threads and checking all possible information connected with that problem, I've changed battery and made all steps (KBA00048704) to recover machine but an erros still persists and when i'm trying to recover data after CD390 error it cycles while trying to recover with no progress. There is possibly a problem that i haven't got a Special firmware (I only got this fresh one GDC-M1-990). The last time i've tried to recover the machine it showed "TPM Chip has been changed". I've also read every possible thread on forum about that but nothing helped.
Today another client called me and told that he has the same error as described above. I know that it means faulty/drained battery, but i don't know how to recover machine after replacing it.
Can anyone help me to solve this problem?
Thank you.
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