Win7 system small horn switch rendering gray Unable to adjust volume how to do

Operation Steps:

1, press "Ctrl+alt+delete", click "Start Task Manager", find "explorer.exe" in the Process box, select, then click the end process;

2, the end of the process we will find that the desktop is gone, do not worry, and then we click on the task Manager "file"--"new Task (run)";

3, then in the "Create a new Task" column, enter "Explorer.exe" Press the return, the desktop is back;

4, we again in the taskbar right button, now properties, in the "open and close the System icon" under the small speaker switch can be adjusted.