Taskbar disappears due to AutoHide feature enabled.
Cause:
The Taskbar 'Auto hide' feature is enabled. This causes the Taskbar to disappear until the pointer rests on its location on the desktop.
Solution:
Open the 'Taskbar options' dialog box and clear 'Auto hide'.
1) Use one of the following methods to open the 'Taskbar Properties' dialog box:
a) From the 'Start' menu:
1] Press CTRL+ESC to display the 'Start' menu.
2] Select 'Settings'.
3] Select 'Taskbar...'. (The 'Taskbar Properties' dialog box appears.)
Taskbar from menu
b) From the Taskbar itself:
1] Move the mouse pointer to the area of the desktop where the Taskbar last appeared. (The Taskbar appears.)
2] Right-click any open portion of the Taskbar.
3] Select 'Properties' from the pop-up menu that appears. (The 'Taskbar Properties' dialog box appears.)
2) Click the 'Taskbar Options' tab.
3) Clear the 'Auto hide' check box.
'Toolbar Options' tab
4) Click 'Apply'.
5) Click 'OK'.
