spilled on laptop – HELP!

I spilled wine on my laptop…. It looked like everything was fine, and I ran to get paper towel to clean up the spill.

When I got back, the monitor was black. I turned it off, wiped it down, and turned the laptop back on. Everything booted fine, except that the monitor was pretty much black. Its like the contrast is WAY down so that the screen is pretty much black, but everything else seems to work just fine.

How can I fix this?