Re-install of Continuum system and security key is not being recognized.
Sentinel Security Key
Driver not loaded
Make sure antivirus is not running on installation. If so, disable and re-install Continuum, or try to reinstall the Sentinel Key driver. The Sentinel Key driver is located in "\Continuum\Install\Sentinel" directory and is an executable that can be run to install the driver.
Also Sentinel Key drivers can be located on their website:
At times, the removal and reinstall of the driver, still doesn't recognize the key even when it can be seen in another PC. If that is the case then do the following:
Go to http://www.safenet-inc.com/support-downloads/sentinel-drivers/ and download SSDCleanup and run it. This will do a clean removal of sentinel drivers on the PC.
Reboot and then reinstall the Sentinel driver from \Continuum\Install\Sentinel directory (SSDv7_xx.exe)
Test multiple Windows accounts. There can be restrictions placed even on local admin accounts that interfere with reading the key.