If you ever encounter this error then it is because the dll file is mssing from your windows operating System. It can be fixed with a single click of button using DLLSUITE software. The direct download link for this software is given at top of description.
All errors including
“D3DX9_34.DLL Not Found”
“File d3dx9_34.dll not found”
“The file d3dx9_34.dll is missing”
“D3DX9_34.DLL is missing. Replace D3DX9_34.DLL and try again.”
“D3dx9_34.dll not found. Reinstalling might help fix this.”
“This application has failed to start because d3dx9_34.dll could not be found!”