If you installed correctly as soon as you plug in the radio you should see it recognized by windows. If not check another cable. You should see in device manager that its installed and what com port it is. It gets pretty tiring with all the issues no matter what platform you use and I cannot for the life of me see how any of it is reliable in an emergency, Just another mass fad in ham radio I guess. It would be nice if some software engineer came out with a basic operating system to run these modes. I would pay for that. maybe a stripped down win 7 or something. When I had such and animal running I never had any problems.