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Post originale di: Moinul Haque ,

Titolo:

Machine is powering on but no display

Testo:

During OS(Big Sur) updation suddenly light goes off. After few minutes we have tried to powering on the machine then we have found machine is powering on but no display. We have replaced the RAM and Hard drive but problem not resolve.if any one have any solution

Dispositivo:

iMac Intel 21.5" Retina 4K Display 2019

Stato:

open