When you use find-all and find-in-files in Notepad++ a search-result window appears below the screen. On my system this window have been hidden (possible I have dragged it to minimize) and it cannot be unhide.
I have tried to drag all bars in notepad++ window; but nothing was able to unhide it. The window is still there - somewhere in dark - and if I press F7 and enter, the first search result will be open. but the search-result window is still hidden.
%APPDATA%/Notepad++
and re-open Notepad++. It will start fresh (and somehow keep the plugins you installed but not their settings).config.xml