Nah, sorry smudge mate, it's lost and gone forever. You'll have to buy a new computer now.
Alternatively move your cursor as far south as it will go (it should then turn into a double vertical arrow), click and hold down the left mouse button, drag it up a centimetre and let go of the mouse button. You might also want to left-click on the tastbar while you're there and tick "Lock the Taskbar" to avoid you misplacing it again and thus, avoiding the cost of a new computer.