title: No CUDA-capable device is detected
body: <p>I am new to CUDA programming, and I am completely stuck.  When I try to run either the supplied <em>deviceQuery</em> utility or one of the sample applications, I get the following error:</p>
  
  <pre><code>cudaGetDeviceCount returned 38
  no CUDA-capable device is detected.
  </code></pre>
  
  <p>I am using Windows 7, 64-bit.  I installed Visual Studio 2012, and then CUDA 5.0 64 bit.  My graphics card is an NVIDIA GeForce GTS 250.  Today I went to the NVIDIA site and re-installed the most recent drivers for the card.</p>
  
  <p>I can't find any support for this error in Windows beyond "ensure you have a working driver installed".  Does anyone have an idea of what could be wrong?</p>