If your computer keeps changing audio to 5.1 Surround after restart or vice versa, there is something wrong with the audio settings or audio drivers. Use these solutions.

After 5.1, the next level of sound fidelity is 7.1 surround sound — first introduced with Disney Pixar's Toy Story 3 in 2010. The 7.1 setup takes the 5.1 system and closes the circle, adding two ...