'No Sound Bug' Troubleshooting Assistance: What We Know And What Can Be Done About It

there troubleshooting to update/check your sound drivers,graphic drivers,graphic drivers,etc :) :-) :D
Identify your systems. To do this, go to the control panel, and then click on the "Device Manager." Under your device list, look for any category, which will list your systems. You can click on your any systems for further information, such as the currently installed driver information.

then double click the thing you want to update,it have two choose,choose the first one.Then, wait it auto updated.