I have 2 HTPC's, one of them plays all resolution video files without any problem whatsoever. The other one doesn't. Both are very comparably powered, the one that works is on a newer Radeon (an all-in-wonder), the one thats struggling is the Radeon X700. I finally found out that its hte DXVA and that my X700 PC was not utilizing this. I further looked into it and media center did not have it in the list of DXVA compatible cards, but it also said "this list probably isn't complete". So, I crosschecked with ATI and ATI states that the X700 IS capable of DXVA. So, what am I missing? Is it not the right version of DXVA? Whats going on!? I like this card I don't want to buy a new one.