Either the trackpad or whole type cover may remain unresponsive. when The Surface Keyboard is non-responsive then when you press any key, it has no reaction on the screen. Sometimes the keyboard becomes nonresponsive. But there is a problem which is very common among users, sometimes Microsoft surface keyboard is not working. I have been using this device for the last one and a half years and I really like this very much. Microsoft Surface is one of the best devices in the Microsoft product line, it is my personal favorite.