Sometimes errors come up from nowhere. Same happened with me when I downloaded the free MMO game World of Tanks. After downloading the installer I launched it and waited about 1 hour to install the game. When the installation was completed I launched the game and was quite surprised. The d3dx10_43.dll is missing error appeared on my screen. Following this step by step tutorial I was able to fix the game.
Usually the d3dx10_43.dll is missing error happens when your program can’t find this dynamic library in your system folder. The fix for this problem is very easy and you don’t need to have any advanced knowledge in computers.
All you have to do is to download and install d3dx10_43.dll file from this link: http://fix4dll.com/d3dx10_43_dll.
If you have the d3dx10_43.dll is missing error you can find the solution here.