This is a really lame response from Microsoft. Thanks for telling the OP that his/her warranty is voided without providing any assistance on the actual problem.
I care because I have THE SAME PROBLEM. My keyboard still works, as does the laptop, but the keyboard is becoming unglued from the computer. There is a gap now. on both the right and left sides. It's probably as simple as the glue holding to the keyboard to the computer no longer sticking.
I was wondering what I can do about it. But it sounds like all you'll tell me is that I've voided the warranty. That's not helpful, or even particularly Germaine.