Rgdcrazzy

I recently bought a 97 polaris slt 780. The first couple times I had it out this year it ran great. Started right up everytime. The last couple times there was a red light blinking on the top of the screen. What does the red light mean? Also The second to last time I too it out it would fire up no problem on land but when it got in the water it didnt want to start. Finally it did and ran fine the rest of the day. Was out on it again tonight and it did the same thing. It will turn over and start for a second. but then staul out. After a couple times of trying it will start and run great the rest of the time. What could this be? Also tonight when I was out on it the screen put up some weird symbols and then the only function it would display was the clock. What is up with that? I am new to the pwc scene and I dont have the manual for it. Please help.