Windows 8.1 and Windows 7 displays different notifications and icons on Taskbar. These icons and notifications can be customized using the Customize icons on the taskbar options. For example you do not want to see notifications for any application in the Windows Taskbar then you can change the settings using Notification and Icons section. Listed below are steps for customizing notifications and icons on Taskbar.
Notifications and Icons in Windows 8.1/Windows 7
Notifications Area Icons section can be accessed by clicking in upward arrow on Taskbar and selecting Customise option or via Control Panel -> Appearance and Personalization
Under Taskbar and Start Menu section click on the Customize icons on the taskbar link. This would display the dialog box for changing the icons and notification on task bar.
The different icons and notifications that can be customized includes Action Center, Network, Volume, Windows Explorer, Windows Media Center, Power and any other custom application installed on the system. The behaviour of these icons and notification can be set to either show icon and notifications or Hide icon and notifications or only show notifications.
If you want to show the icons and notifications always then you tick the check box Always show all icons and notifications on the taskbar available at the bottom. Similarly you are provided with the option to Turn system icons on or off.
And when you want revert the changes done to notification and icons, click Restore default icon behaviours.
Also See: How to quickly find edition on Windows 8