Make Sure Sentinel Drivers are Installed
Open Control Panel | Uninstall a program and verify that Sentinel System Driver Installer 7.6.1 is listed in Currently Installed Programs.
If an older version (prior to 7.6.1) of Sentinel Driver installer is listed, remove this version and reboot the computer.
To install Sentinel 7.6.1 drivers, download and run Sentinel driver installer SentinelSystemDriverInstaller.7.6.1.exe.
Important
Reboot the computer after installing the drivers.