It just seems so bizarre based on my experience with Surface Pros and I really can't imagine how this is occurring. It must be a one of a kind issue. So sorry you are going through it.I have two SP3's and two type covers. One SP3 has a bad touch screen, but both keyboards work on it. My other SP3 has a perfect screen and neither keyboard works on it. It's not the keyboard. I'd be happy to let you spend time figuring it out. I've tried every thread I can find and have completely wiped the computer and started from scratch. It's a failure.