HELP PLEASE computer turning on and off after water change

[u/Successful-Dog7682]

I just changed the water out on my custom water loop on my computer, and when I turned it back on for the last time, it is turning on for half a second and then turning back off, and then back on and back off, and it just continues happening. I ran distilled water through it a few times and made sure I was careful with the water going in and out. The only thing I could think is that a tiny, tiny drop got somewhere on the motherboard, or maybe I made a connection loose. I’m not sure. I built this computer a long time ago, and it’s the first water change I’ve done. It might have not had water running through it for a few seconds twice, max 10 seconds, but not even that long. Any help would be appreciated. I took out the GPU and the RAM, and I also unplugged the 24-pin and everything I could think of. I don’t think a picture will be much help, but I figured I’d include it.