You can try to enable it from the Taskbar Right-click your Taskbar (bar at the bottom of your screen), select Properties, click the Notification Area tab, then under System icons, select the one that you wish to show (Clock, Volume, Network, or Power).
Hello, I have the same problem as well. However, when I go check the Notification Area tab, it says that the options are "Show icon and notifications". Even when I change it to a different setting and set it back, they still don't appear. I don't know what to do. And usually, in the Notification Area, there are small icons next to the setting to show what they look like. My icons for battery life and volume do not show. What can I do? Please help!