Hello and welcome to the forums. When you get a chance, please read through the
Help Us Help You thread. There is lots of useful information on system configuration, general troubleshooting and how to get the most out of the forum.
As for your issue, first of all, you should not be using your main PT interface, the Scarlett in your case, as your Windows sound interface. Make sure you change the default sound device to use your internal sound card or some other source.
Next, make sure you are using the latest driver for your interface.
Now, when you start PT, make sure the Scarlett is chosen in the Playback Engine. Go to your IO settings, select the Input tab and press the Default button. Now do the same for both the Output and Bus tab.
Create a new blank session, you should be able to add an audio track and select the Scarlett input, record enable the track and hear / record audio.