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Symptoms:

  1. Since two weeks display used to suddenly disappear and then when it comes back the brightness used to be 100% scaled automatically.

  2. Now the computer is booting, the fan's voice is there, Keyboards caps Lock is showing LED ON/OFF, but permanent blackout.

  3. Sony Vaio Blackout Display Issues, screen/monitor tested today by replacing with 3 new display screens and seems to be not working that means my original may also be right, what else could be the culprit?

I took the machine to the local vendor he tried to troubleshoot the initially blamed the screen, but he tested with 3 screens none worked, which means the issue is somewhere from the motherboard.

Which steps should I take now? which hardware components should I suspect?

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  • Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer.
    – Community Bot
    Commented Oct 30, 2021 at 20:18
  • Done, Two categories deleted. Thanks.
    – Stackchampu
    Commented Oct 30, 2021 at 20:38
  • Title also updated to be more informative.
    – Stackchampu
    Commented Oct 30, 2021 at 20:56

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