On all versions of Windows, a special driver for the hardware lock needs to be installed.
If you have installed APSDS from a CD-ROM, load the CD-ROM.
Navigate to the root folder of the CD-ROM, then double-click on the file "Sentinel Protection Installer 7.3.2.exe".
If you do not have an APSDS CD-ROM, download and install the following driver:
Sentinel System Driver - Latest Version