When you choose the option "hide when minimized".
Right click the taskbar, click properties, uncheck auto-hide.
Right click on your windows taskbar, go to properties, under the taskbar properties you will get the taskbar appearance pane in which you check the Auto hide the taskbar option and your taskbar will get disappear.... whenever you need it just hover you mouse to the bottom of your desktop it will reappear....
It is a flaw within the operating system, silly but still not resolved.
It's called the 'reduce down' button - or 'minimise' button. It's shown as a small button with a horizontal line on it.
The task-bar could disappear if you used F11. It is a shortcut key for making Chrome go full screen.
You can always push the start button in your keyboard.
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Right click on taskbar, the click on "Lock the taskbar".
True
on the taskbar right click on it and select lock the taskbar and when you do it again it should be checkmarked
A taskbar is used for reseting the whole computer
If you use the unlock option you will still have a narrow blue line at the bottom. But the taskbar basically would be hidden. If you use the autohide option the taskbar will hide completely automatically. But when you move the cursor at the place where the taskbar suppose to be the taskbar will pop up.