
You might have to restart the computer if you are still getting DLL errors
It will only take a few seconds to install and you will get a message when it is finished. In the black window write: regsvr32 d3dx9_27.dll and then press Enter. In Windows Mouse Click Start (Bottom Left) and Search for Run and Mouse Click on Run. If you don't know, what is DLL - read wikipedia article about Microsoft Dynamic-link library How to install d3dx9_27.dll file?
Dll usually should be in the folder C:\WINDOWS\system32, C:\Windows\SysWOW64\ or in the application folder in which the error occurs. If you have an error related to d3dx9_27.dll, check there is a file on the computer.