Chosen Solution
Some water spilled on my switch, mainly in the fan, and I dried it off but it got stuck in a boot loop. I powered it off and left it to dry for a while, and when I turned it back on it restarted fine, I was even able to start a game. However I wanted to let it fully dry in case there was more water that hadn’t dried. So when I tried powering it off, it got stuck in a boot loop again. So I’ve powered it off completely again and put the switch and the joycons in rice. Is the boot loop from possible water damage? Like I said it still turns on, but it keeps getting stuck in the boot loop. Both joycons work fine and don’t seem to have any damage.
first of rice does absolutely nothing, it needs opened and cleaned with 99.9% isopropyl alcohol to wash of the minerals from the water. do this and then try it again or take it to an experienced technician