Follow these steps to diagnose and fix the red keys appearing in the system tray (lower right corner of desktop) indicating that Centurion Guard is unlocked even though the physical key is in the locked position.
Applicability The information in this document applies to Bill & Melinda Gates Foundation Standalone computers with a Centurion Guard installed running Windows 2000 or XP.
Instructions - Shut down the computer.
- Confirm that the Centurion Guard key is in the Locked or DVD Unlocked / Hard Drive Locked position.
- Turn on the computer and log on as exec.
- Do the keys still appear in the system tray indicating that the Centurion Guard is still unlocked
see below)? If so, continue.
 - Unplug the power cable to the computer.
- Open the side panel of the computer case.
- Locate the Centurion Guard PCI card (green circuit board pictured below). It is the only card that has a flat, gray, data cable attached.
- Remove the Centurion Guard PCI card and reinsert the card into its slot. If you are uncertain about how to remove or reinstall a PCI card, seek additional technical support.
- Remove and then re-attach all connections to the Centurion Guard PCI card. The connections are: Data cable (1.25" wide, flat, gray cable); CD power cable with red, black, and yellow wires; and Cable to key assembly (thin, flat, gray cable that connects key assembly on front of computer to the Centurion Guard PCI card).
 - Plug the power cable back into the computer and turn it on.
- Turn on the computer and log on as exec.
- Do the keys still appear in the system tray indicating that the Centurion Guard is still unlocked? If so, continue.
- Shut down the computer and unplug the power cable to the computer.
- Unplug the Centurion Guard key assembly wire from the Centurion Guard PCI Card. This should force the Centurion Guard to lock if it is working.
- Turn on the computer and log on as exec.
- Have the keys disappeared from the system tray? If so, the key assembly is defective. Contact technical support for assistance with replacement.
- If the keys still appear in the system tray continue.
- If the Centruion Guard did not lock when the key assembly was unplugged, the Centurion Guard PCI card is probably bad. Contact technical support for assistance with replacement.
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