Is this on a Vista/7/8 machine? On these a pure device may be disabled - see: <a data-cke-saved-href="" href="" "="">http://msdn.microsof...4(v=vs.85).aspx

Quote
When the fixed-function vertex or pixel shader converter is used, the pure device is disabled. When an application requests the pure device, the Direct3D runtime creates a HAL device.
 

This is it. Thank you very much for this link, I didn't know this.

And thank you all guys

<blockquote class="ipsBlockquote" data-author="mhagain" data-cid="5022477"><p>Is this on a Vista/7/8 machine?&nbsp; On these a pure device may be disabled - see: http://msdn.microsof...4(v=vs.85).aspx<br />&nbsp;<br />Quote<br />When the fixed-function vertex or pixel shader converter is used, the pure device is disabled. When an application requests the pure device, the Direct3D runtime creates a HAL device.<br /><br /></p></blockquote><br />This is it. Thank you very much for this link, I didn't know this.<br /><br />And thank you all guys