Can you replace a keyboard motherboard?
so I have spilled water on my laptop and none of the keys work because the green thing under the key board is broken (I don't know it's name) is it possible to replace?
Yes it can be replaced and they are relatively cheap to buy. Just google Lenovo Yoga 2 11" Keyboard replacement. I am unsure what is involved in actually replacing it, but I know that the part is replaceable :)