Volume icon keeps disappearing from task bar

Hello, Go to Start, Control Panel, Sounds and Audio Devices click it, and you should see an option which says, Place volume icon in taskbar put a tick in that box and click ok.

Now, right click the taskbar and click properties and if you have Hide Inactive icons ticked, then click Customize youll see a list of taskbar icons located the volume icon and go over to Behavior and click "Always Show"

That should work, i went through that with Xp so i dont no what OS your using