While I am playing DDO my screen suddenly goes completly blank, i can't see anything but i can here music in the background can't move my toon, can't type messages, tried changing from direct X 10 to direct X 9 and it didn't work, switched back and still did not work. this hapens on multiple worlds but not to anyone else who uses this computer, doesn't happen in any one particular place, seems to be completely random.

Computer Info.

Edition Windows 7 home premium
Model Studio XPS8000
Processor Intel Core i7 CPU 860 @ 2.8 GHz 2.79 GHz
RAM 8.00 gig
System Type 64-bit operating system

Any help would be... well... helpful
If you have also had this problem and have fixed it I would very much like to know how you fixed it.