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I want to make my desktop PC turn itself back on after a power outage, so I had a look in the BIOS. There is an option called "AC BACK" which seems to be what I'm looking for, but it's greyed out.

enter image description here

Does this mean the motherboard doesn't support these options, or that I have to do something to enable them?

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  • Maybe Platform Power Management needs to be enabled…?
    – Daniel B
    Oct 22, 2020 at 9:18
  • @DanielB I edited the question, the new photo shows how it looks when Platform Power Management is enabled. It just adds the three ASPM options, but the other options remain greyed out.
    – Magnus
    Oct 22, 2020 at 13:53

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