Hi there and welcome
What is the make and model of the camera?
Can you remove the battery please then hold the shutter button down for 60 seconds then release.
Wait 5 minutes, put the battery back in and try to turn it on.
Tell me please if it now starts
ok, it is likely the mainboard has shorted, but the only way to confirm will be to put it in a bag of rice for 48 hours.
This will take out the moisture, then try to turn it on. If it still fails, you will need to replace the camera Christina as purchasing a new mainboard will exceed the value of the camera.
If you would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.