What if Win10 can't adjust the volume?

Note: This method needs to modify the registry. It is recommended to create a restore point for your system before the operation, so that it can be restored when an error occurs.
1, press Win+R to open the run, enter regedit to enter the registry editor;
2, expand the following location:
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun
3, create a new name on the right side called systray.exe String value;

4, double-click the systray.exe key value, and modify its value to C:WindowsSystem32systray.exe, OK.

5. After restarting the computer, you can usually resume normal.