That was a very vague question, and a simple GOOGLE of xinput3_1.dll tells us that it is a keyfile in DirectX and that there is a problem. So it sounds like you need to download DirectX from microsoft, run it to install it (should autofix the issue) and if it still occurs, have you considered looking to the PC GAME MAKERS WEBSITE FOR SUPPORT? Maybe you need a updated copy of the Game? Maybe they just suck in making games (there been a few like that).