[Benoni]

did you uninstall the 8.0.3 drivers first from PROGRAMS and FEATURES located in the control panel.

Then RIGHT CLICK the Driver installer, choose Run As Admin. Let it load. You can leave the 003R off, it doesn't matter.

Then restart. Turn your 003R ON before the PC boots.

When it boots. Go to Devices and Printers in your Start menu. You will see the 003 Rack. Right click it. Properties >Hardware tab> Properties. Click the Driver tab. it will PROBABLY say Driver version 8.0.3.xxx, this is the wrong driver.

Click UPDATE DRIVER. Browse My Computer. Let me pick.

Now depending on if you have another interface like the 11R installed, it probably wont show the version of the driver in the Compatible Drivers area, BUT if the 003R is your only interface you should see 2 drivers. 8.0.3 and 8.0.4. If you dont see them, UNCHECK the "Compatible Only" box. Choose the 8.0.4.223 driver dated 12/16/2009. Click next. Let it load. Then the HOST light will probably start to blink on your 003R. Then you are good to go. Restart, and launch Pro Tools. Remember to have User Account Controls OFF. And always launch PT with Run As Admin.