ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
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egydiocoelho said:It is possible that the bios has been corrupted! See these two links:
https://community.acer.com/en/discussion/comment/538593/#Comment_538593
https://thomas-asnar.github.io/obsolescence-programmee-black-screen-bios-predator-g9-591/Remembering that the bios recovery procedure is extremely risky and I do not take any responsibility for any damage!