Re: Spilled milk on laptop! Need help!
I suggest you call the Dellsupport and explain what happened. Ask them to guide you how to remove the keyboard and locate the connection for the palmrest on the motherboard. Clean what you can and hope for it to get better. If it doesn't help you might need to replace palmrest and or motherboard.
Running a 32-bit diagnostics might help you determine wich of the parts has to be replaced.