Hi, everyone

I've worked on an workstation equiped with a GF8800GTX(G80) graphics card recently.
I want to use D11 API on this platform, so I installed a Windows server2008 SP2 64bit( X64 english version ) and then installed the kb971644 package sucessfully (I found I got the D3D11.dll).
After that, everything goes OK except the DirectCompute samples(in DX SDK, cs_4.0 )
The program just told me that no hardware CS capable device installed and then ran the samples on a ref device. But in fact, I think my 8800GTX card is capable with cs 4.0 and I had already install the NVIDIA 190.62 driver( which supports directcompute ). I even tried the newest 191.07 driver, it still doesn't work.
I wonder why this happened and I need help!

Thanks to all!

The DirectCompute support in the current nvidia drivers is not enabled by default. You should contact their developer support to get more details about how you can activate it.

Ralf Kornmann:

The DirectCompute support in the current nvidia drivers is not enabled by default. You should contact their developer support to get more details about how you can activate it.

Thank you very much!
I've taken your advice and then get the way to make it run.
Followed the DirectCompute SDK Release Notes in NVIDIA GPU Computing SDK, I deleted D3D_39482904 the string from the registry, and then, the Directcompute sample runs successfully on my 8800GTX card.