High Detail Post-Process effects Issues
"High Detail" Post-Process effects work on:
GeForce3 & GeForce 4 Series with 40.xx or newer drivers
GeForce FX series with 45.23 or newer drivers
Motion blur or Bullet Time Tone Mapping will look black or have a single, solid color if you have 21.* or 30.* series drivers (or 44.03 for GeForceFX). It's time to upgrade those drivers.