Have you recently installed or updated the driver for your display adapter? If so, did this error occur immediately after? If the answer to these two questions is yes, roll back the driver. If not:
1) If you've only had the one BSOD, don't do anything. Just ignore it.
2) If this is one of several with exactly the same information, do the following:
* Download and install the latest Direct-X release
* Download and install the latest driver for your display adapter