My switch did something similar today. Was playing Civ5, I pressed power button to put it to sleep. Came back 3 minutes later, wouldnt wake.
Assumed maybe it ran out of battery(didn’t get any low battery notifications, though) Held down power for 15+, went to PC to reflash payload. I get the SX OS logo, then Nintendo logo then screen shuts off.
It’s not in RCM anymore.
Flashed Hekate, it said I had 28% battery.
If I hold vol+ while flashing I get the SX OS menu. I turned off AutoRCM, same thing. I’m definitely not in AutoRCM anymore.
Happens with SD card in and out of switch. Happens on CFW and OFW.
I’m currently letting it charge via the wall charger, but I’m not sure what the next step will be if that doesn’t work.
I have NAND backup, etc.