Win7 system small speaker switch gray can not adjust the volume how to do

Operation steps:

1. Press “CTRL+ALT+Delete”, click “Start Task Manager”, find “explorer.exe” in the progress box, after selection , then click to end the process;

2, after the end of the process we will find that the desktop is gone, don't worry, then we click on the "Files" in the task manager <; file & rdquo; & mdash; & mdash; & ldquo; new task ( Run) ”;

3, then enter “explorer.exe” in the "Create new task" column; press Enter, the desktop will come back;

4, we Right click on the taskbar, now the property, in the "Open and close the system icon" under the small speaker switch can be adjusted.