Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.
This can sometimes happen due to Windows updates or more likely if you plug the HASP USB key in after Windows is booted. With default Windows 7 settings Windows may go out and automatically try to search/update the HASP driver and find and install the incorrect one (Sentinel/Safenet). Here is a way to change the settings in Windows 7 to prevent Windows from automatically searching/updating device drivers: 2b1af7f3a8