Defcon uses openGL, and the Vista
openGL drivers aren't too good yet since Vista is
still in Beta. You should try to download Beta drivers
for your graphics card. At this time, only NVidia
Install the latest Sound Drivers
Ensure you have installed the latest
drivers for your Sound Card.
Shut down any Sound Apps
Defcon requires access to your Sound
Hardware. Ensure you are not running any other audio
programs such as Winamp or Windows Media Player as
these can interfere with Defcon.
Run Windows Update
Perform a Windows Update (from your
Start Menu). This will update any old components on
your computer and can solve many problems.