When you plug your controller in Windows should search for the drivers automatically (or it will ask your permission to). Now try checking that it is being recognized. If your Operating System is recognizing your controller correctly, then it will more than likely work with your Serato software. It's good to experiment with ALL ports on your computer before moving on. Also, certain USB ports on your computer can function better than others.
Often overlooked, but the first thing we recommend is testing with several different USB cables to connect your device. If you are experiencing problems with your MIDI Controller/DJ Hardware not connecting or behaving correctly, there are a few things you can check first which hopefully will ensure successful operation with Serato software.