I want to check out some High Definition demos with this pc and unlike my nVidia 6800GT this card has Fast Write on it. The microsoft site say I need to enable it which I found and tried to do in the card settings. Unfortunately after restarting the card reverted back to rewrite disabled? What else can I do in setting to enable it? I am running a MSI KT3 Ultra 2 board with an Athlon XP2600 cpu and 1 GB ram....the card runs in a 4x AGP slot if that makes a difference ?