Black pathcer

When I click on Lol to start, the login window opens ( or patcher whatever) but the login orange button is missing and the whole window is darkish. The other things in the window are shown normally, for example the pathc notes or the free champion rotation and so on, but the only thing that is missing is the login button. The X and minimize buttons dont work too. I have tried some things that are suggested here but dont work. I am using windows 10 if that helps. Thanks.