Glad to hear they managed to fix you. Would like to point out a quick scan of your DXDiag shows both audio and video drivers are from 2009...
Driver Attributes: Final Retail
Driver Date/Size: 3/12/2009.
That's really not good...Looks to me like yer using a laptop and the manufacture may have stopped providing support. Would recommend you visit the Radeon and Realtek websites to see if they have newer versions for your hardware. DDO has evolved quite a bit since then and using outdated drivers makes it that much harder for an older system to remain compatible.