Checking your version of DirectX - Microsoft Support
To check which version of DirectX is on your PC using the DirectX Diagnostic Tool, select the Start button and type dxdiag in the search box, then press Enter. In the DirectX Diagnostic Tool, select the System tab, then check the DirectX version number under System Information.
How to install the latest version of DirectX - Microsoft Support
There is no stand-alone update package for this version. You can update DirectX by installing the service pack and update listed below. DirectX 11.1 is available for Windows 7 SP1 and Windows Server 2008 RS SP1, with Platform Update for Windows 7 and Windows Server 2008 (KB2670838).
Open and run DxDiag.exe - Microsoft Support
Open and run DxDiag.exe. This tool is used to collect info about devices to help troubleshoot problems with DirectX sound and video. A support person might ask for this info, or you might post it in a forum when you ask for help.
How to install the latest version of DirectX - Microsoft Support
DirectX 11.2 is included in Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2. There is no stand-alone update package for DirectX 11.2. You can only install this DirectX version through Windows Update in Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2.
Open and run DxDiag.exe - Microsoft Support
Open and run DxDiag.exe. This tool is used to collect info about devices to help troubleshoot problems with DirectX sound and video. A support person might ask for this info, or you might post it in a forum when you ask for help.
Which version of DirectX is on your PC? - Microsoft Support
If your PC doesn't have the right version of DirectX installed (the product box should tell you which one you need), your game might not work properly. Follow these steps to use the DirectX Diagnostic Tool to check your DirectX version: In the Search box on the toolbar, enter dxdiag.
Fix sound or audio problems in Windows - Microsoft Support
1. Check your speaker output. 2. Run the audio troubleshooter. 3. Verify that all Windows Updates are installed. 4. Check your cables, plugs, jacks, volume, speaker, and headphone connections. 5. Check sound settings. 6. Fix your audio drivers. 7. Set your audio device as the default device. 8. Turn off audio enhancements. 9. Restart Audio Services
Fix problems that block programs from being installed or removed
The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the troubleshooter. Download troubleshooter.
DirectX is installed incorrectly on your computer
You receive the following error message: Game cannot run because the version of Microsoft DirectX installed on your computer is incompatible. Please reinstall DirectX 9.0 by running Game Setup, or download the current version from www.microsoft.com/directx.
Use a fix-it tool with Windows 10 - Microsoft Support
Select Start > Settings > Update & Security > Troubleshoot > Additional troubleshooters, or select the Find troubleshooters shortcut at the end of this topic, and then select Additional troubleshooters. Select the type of troubleshooting you want to do, then select Run the troubleshooter.