The problem with the sound signal is usually related to cables and connectivity. The first thing to do is to check the cable's connection to the PC. As a recommendation, replace the cable that's connecting to PC or switch the port. After this operation, check the device manager. It's possible that not all devices were installed properly.
Lastly, re-install the program and configure it again, but this time use Administrator, and switch the USB port. Use the back ports, because the ones from the front might give you problems.