-Right+click on "My Computer" in the Start menu and choose "Properties. There, choose the hardware tab and click on "Device Manager.-Choose View>Show hidden devices. A category labeled "Non-Plug and Play Drivers will become available. Expand the list and you will see an item called "TPkd." -This item is is part of the PACE anti-piracy software that the Pro Tools LE installer copies to the hard drive. -Right+click on the TPkd item and choose "Properties."-Choose "Use this device (enable)" from the Device usage menu and restart the computer.