An unknown Directx Error has occurred...

OK so i keep getting this message whenever i try to join a game: An unknown Directx error has occurred and League of Legends cannot start. Please make sure your video card is using the latest video drivers from the manufacturer. I have tried literally every solution out there on the internet and nothing has worked. All of my drivers are up to date. I have pretty much given up due to nothing working so i was wondering if anyone had any other suggestions that isn't already in other threads. I have deleted tons of files and uninstalled several times and reset my computer. Getting to the point that I'm just going to quit the game because this is ridiculous.