Intel HD Drivers and DX11 issues

Hey folks.  I have a problem with Win7PESE, on a Lenovo G570 laptop.

In the build of Win7PESE, If I omit the dx11 script, I cant get my audio driver to work (Conexant).

But if I enable dx11 script, it works, along with Audio script.  But then I get hardware accel problems (firefox has missing graphics, and black spots).
If I disable hardware accel in firefox, its fine.

So it seems, the dx11 script along with installing the Intel HD graphics drivers(integrated on boot of Win7PESE), causes issues.

Now, If I omit the dx11 script, I have no sound, but the graphics drivers are fine(Firefox loads normally with hardware accel on)

Is their a solution?

(I did install dx 11.1 to see if that would solve, to no avail).

test with using

http://theoven.org/index.php?topic=1413 -> "Mozilla Firefox" plugin
or
\Downloads\AppY\Network\"Mozilla Firefox" plugin