Check the logging page, something like this should be at the start.
14:35:21 Driver installed properly. Driver Version: 1.9.
If you see "NO Digital Temperature Sensor Detected" your processor is probably not supported. See the supported processors in the FAQ
Make sure TThrottle is closed before installation! If TThrottle was running, close it now and run setup again.
Otherwise go to the directory [program files][efmer tthrottle] and start "InstallDriver.exe" as administrator.
Select the "Remove Driver" button and exit.
Start "InstallDriver.exe" as administrator again and select "Install Driver".