Ati 5830 directx 11 problems

I have recently replaced my 4870 for a 5830, but i cant get the directx11 to work on it, everest ultimate tell me that windows vista service pack 2 is installed and directx 11 is supported, but yet when everest tells me the directx hardware support it tell me that my graphics card only supports directx 10.1, here are some screenshots showing you my problem

i know that the drivers for the 5830 havnt been officially released yet and will be coming in the catalyst 10.4, could that be anything to do with it or do i need to update anything?
Thanks in advance.
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More about 5830 directx problems
  1. Try running a DX11 benchmark like the Unigine Heaven 2.0 benchmark which can be downloaded here

    See if you can run it in DX11
  2. i have already tried doing that when i first got this card, but my pc just doesnt want to even run any of the benchmarks in dx11 or dx10, it just freezes and does nothing, so have to close it with task manager
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