Hi bradley - Welcome to w7forums
I did a quick search on the issue and didn't find a good solution.
However I read a few post that were pointing to possible solutions.
- Reboot your computer to remove any possible glitches that might can be solved by refeshing the system.
- Reinstall DirextX for Windows 7. - I'm not sure if there is a DirectX 10 download link for Windows 7.
- Reinstall the drivers for your graphics card. Please make sure they are upto date.
I did find a link for Windows 7 DirectX 11 drivers. -
Download DirectX 11 For Windows 7 ( DirectX3D 11)