[SOLVED] Standalone use (home server): restart after power cut

I’m using my old 11th-gen in a CoolerMaster case as a server, and I’d like to get a behavior similar to e.g. a Raspberry Pi after a power cut, i.e. it simply restarts, without the need for any manual operation.

Is it possible?

If not, I’d like your input on solutions to keep the server powered when there is a power cut.

It’s a BIOS setting. “Resume on AC Attach” I think it’s called.

Otherwise, Uninterruptible Power Supplies of all different sizes are available commercial of the shelf…

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Thanks a lot!
That did it.


Now I am trying to upgrade my BIOS.
I made the mistake to try to update directly from 3.10 to 3.20. In standalone without battery. It did not work.

Update:
I first connected a battery and upgraded to 3.17, then the update to 3.20 went better (still a few problems, but this is begining to be way off-topic).