HIS Hightech X1600XT IceQ here, when I try to install the ATI RC1 drivers,
they don't stick. The installation goes fine, everything says they worked,
but when I reboot my comp, Vista defaults back to the WDDM drivers.
With the WDDM drivers, I get strange random flickering (not the whole screen
just a few random lines towards the top of the display) whenever I start a
program that uses the 3D "stuff." Also with the WDDM drivers, 3DMark only
dispalys the top 2/3rds of the 3D renders. All the various tests show the
FPS/Time/Frame counter at the bottom just fine but the bottom 1/3rd of the
actual rendering is nothing but black. When I installed the HIS included XP
drivers, the flickering and black bar went away but now I can't use Aero :-(