How to check if an usb-driver is installed?

I tried the solution in this thread: How to check whether a driver is installed?

but after I uninstall the driver manually and restart the solution, the driver is still found in the system.

What could be the problem here?

I want to make sure during the installation of my windows-form application, that the driver for the usb device is installed, and if not I want to install it programmatically or give a warning for the user to install it.

any ideas?

thanks in advance :)