My Surface Pro 6 will not always bring up the quick display when hitting those keys. If I have a window open, or tap on an empty spot on the desk top it works. However if I open a window by selecting one of the quick links and then hit the 'x' to close out the window, hitting the Windows key plus 'X' does nothing unless I first tap on an empty spot on the desk top. I have tried to delete the drivers (but did not check the box to delete the software also) but that did not help. Any ideas?