The file m2dxfx.dll is a component of Test Drive 5, a cross-platform racing game developed by Accolade for Windows and Playstation and released in 1998. The Test Drive series gives would-be racers a number of different tracks with different cars to race on each one. This file is part of the visual effects for the fifth entry in the series. If you get an error with this file, the game will not play correctly.
When a game is installed on your computer, the installer program places files on the computer then registers those files with Windows. Windows uses a database called the registry to keep track of all the files. The registry tells your computer where to look for each part of a game when you run it. If the registry is incorrect, your computer will get an error and your game will not run.
To get your games running again, use a registry cleaner. ZookaWare PC Cleaner will scan your system and fix every registry error, guaranteed. Then you can get back on the track.