DirectX is a set of tools for enhancing different aspects of multimedia performance, including video playback, graphics, and sound. It may cause problems to some users if it becomes corrupted.
If you have already tried troubleshooting your GPU and other hardware and software, then the next phase would be to reinstall DirectX on your Windows 10 PC. This article discusses how you can fix the software to get it to work again, without having to perform a fresh installation of your OS.
Currently, the latest version for DirectX is 12. However, it is not necessary that your computer might have the same version as it depends upon your hardware support as well. Another reason for not having the latest DirectX version is that there might be some corrupted files on your PC preventing it from updating. This is probably why you need to fix it.
If you are curious about your version of DirectX, here is how you can check it. Type in dxdiag in Run and press Enter. The DirectX Diagnostics Tool will now run. In the System tab, you can see the version of DirectX running on your PC at the very bottom.