Configuration lost, no startup

I had the same experience for years and I thought that it was the default behaviour. First with the original Pi power supply, then with the original power supply of a DeskPi Pro V2 case, then with another power supply that I bought of 5V / 4A / 20W that stated that was specially for almost all Raspberries models, this last one showed OK sometimes and other times errors, but there was a moment that was 98% showing low power.

Problems disappeared completely after I bought an Apple USB‑C 30W, right now is constantly OK without any errors and it has been in that way for months. :man_shrugging:t3:

I've managed to run it again.
What I've done was, to follow the @ShadowFist way.
I checked in the old sd-card to my chrome os flex device.
After a few minutes of seaking for the backup file, I was able to read the key.

I installed HA from raspi imager to my new SD-card.
After different automatic startup installations, I was able to upload the image and use the key.

For some reason the NAS connection is not active anymore and some enties have not been found.
I guess this is a little work to do, but I will make it.

Thanks a lot