LOL has an unknown directx error how to do LOL can not start the solution

Recently, after the re-system, the LOL login failed. The specific behavior is pop-up prompt “An unknown directX error has occurred. League of Legends cannot be started. Please ensure that your graphics card has updated the latest graphics driver”. . Later, the problem was successfully solved by the following methods. Now I will share it with your friends and I hope that it will help you.
First of all, change your resolution, if it still prompts an unknown directx error, then the following operation actually causes the above problem to be caused by the incompatibility of the graphics card driver. The fundamental method of solving the problem is to use the graphics card. The driver is updated to the latest version to resolve. In this small series, I recommend everyone to use the "Drive Wizard" to update the graphics driver. The latest version of the driver wizard official download: http://www.xp85.com/html/qdjlgfzxbxz.html install and run the "drive wizard" program, switch to the "driver" tab, in the "standard mode" In the interface, check the “latest version” option as shown below:
Note: This operation is very important. Next, check the corresponding graphics card driver and click the right-click "Install" button to install the latest version of the graphics card driver.
Tips: If you install the latest version of the graphics card driver, resulting in an unexpected error, you can click the "Restore old version" button to restore the graphics card driver. Of course, we can also select the latest version of the graphics card driver to install from the graphics card driver version drop-down list. As shown in the figure:
When the latest version of the graphics card driver download is complete, the installer will be automatically launched for installation. After the installation is complete, restart the computer, you can log in to the LOL client.

In addition, Xiaobian suggested that you update the system component DirectX”. Switch to the "System Assistant"-“System Components” tab and check the "Microsoft DirectX End User Runtime" on the right side of the "Install" button to install and update this system component.