The Graphics card and the audio cards are required in the computer for supporting the media related applications. DirectX is basically a component which is used for the gaming purpose and the videos as well. The picture quality of the games and the quality of sound as well are controlled by DirectX. When these start malfunctioning, be sure that your media application will start malfunctioning as well. The file which helps in running this component is D3dx9_39.dll. This is the supporting module which supports the executable one for the DirectX program.
About the missing file error
The missing file error is something which you can often get with the programming files, mainly with the DLL ones. Sometimes, the files get deleted from the computer with the deletion of any other applications. The file gets missing here and you won't be able to run other dependent programs due to the absence of the file. On the other hand, it is possible that the file is corrupted and the corruption of the same is bringing in the missing error. Here are some common areas in which you might get 'D3dx9_39.dll missing' errors.
The error message 'the program can't start because d3dx_43.dll is missing from your computer' can pop up on the system screen with the installation of the game. The download from the internet can be done but the installation of the same can be impossible as the D3dx9_39 dll is missing error is there. It can be lame to search for the file in the system as the corruption might be the reason behind it.
After the upgrade of the operating system from Windows Vista to Windows 7, the problem might take place on the system with the error message. The game may have been installed in the computer but while launching the same, the error message can crop up on the system screen. The game cannot be played as D3dx9_39.dll is missing from the computer.
After installing CD and DVD in the system, it might be incapable of running as the system may fail to read the same. The external drive may fail to run in the computer as the system might become unable to read it. The responsible driver can be corrupted and the reason behind the same can be the D3dx9_39 dll missing error. The drivers can be upgraded but due to the missing file error the problems might not get resolved.
How to get a right fix?
The error message D3dx9_39 dll is missing can be removed from the computer only if the corrupted file can be repaired or replaced. DLL Suite is one such tool with which the process of repair or replacement can be done without any hassle. You can just download the tool and install the same on the computer for the same to run properly.