Lately I had huge spill on my dell Inspiron 15 7556 keyboard. How huge you would ask? Almost half a litre of yogurt. As fast as I could unplugged battery and disassembled it. Fortune was on my side and yogurt gathered only in keyboard, none of it was on motherboard or even deeper. My concern is how to fix my keyboard as it is now almost unusable. Some keys input more simboles like pressing z inputs z*, windows key is always pushed on, numbpad pushes random numbers. I was stupid enough to disassemble all keyboard in to individuals sheets. Do i have any option for fixing or i should buy a replacement?