I was out riding yesterday and went across a creek in a big splash, water was only a couple inches deep. As soon as I hit the water the ATV died. No electrical power at all. No lights, no switch power. It has been sitting in the garage since yesterday evening and still nothing. I have no idea where to start. Help please

 

Let it dry out properly, then check the fuse(s). Probably blown the main fuse between battery and ignition switch.