Not had this problem and the possible best place to start is post up your DXDIAG info so we can have a look at it.
The DxDiag file is simply a text based list of the hardware and drivers installed on your PC. It allows us to identify possibly problems or find trends in major issues, and should be included in all Technical Help requests.
(Not my instructions - I robbed em off somewhere else )
To get your DxDiag file, go through the following steps: