Could you pls post the sreen shot of the error msg so that we can get clear idea...
I'm assuming your trying to log into the console on the server you've installed it on.
I had a similar issue on our 2008 server. Clicking on the watermark usually goes through to the login screen.
I haven't had the issue when logging into the ePO console from my computer
Additionally I will suggest to add ePO console address to IE trusted website.