How to Enable Direct3D Accelerationby Joshua Benjamin
Direct3D is a component of Microsoft's DirectX graphics software and is one of the more commonly used graphics accelerators in PC gaming. Of course, before you can enjoy the benefits of Direct3D acceleration, you need to have that particular component enabled in DirectX. Fortunately for your gaming needs, enabling Direct3D acceleration is not an overly complicated process, and can be achieved in a matter of moments.
Open the "Start" menu and type "dxdiag" into the Windows Live search box, then press "Enter." This will bring up the "DirectX Diagnostics" dialog box.
Click the "Display" tab.
Locate the "Direct3D Acceleration" entry.
Click the "Enable" option next to the Direct3D entry. This will turn on Direct3D acceleration. You may need to restart your computer to make the changes effective.