Lenovo Nerve Center

Hi, I have a problem with the Lenovo Nerve Center, I had to restore my PC due to the clear blue screen due to a game. It is a desktop Lenovo Ideacentre Y720. What is that Audio Enhancer has disappeared from the Nerve Center after I had to restore my PC. The version I have on Nerve Cener is 1.70.0426. Audio Enhancer was at the Nerve Center when I bought the PC. I have re-read it twice but it did not help