One of the most common mysteries on Windows computers is the unintended moving of the task bar.
Usually it happens by mistake, and the task bar ends up on the sides or on of the top of the screen. Getting it back into the normal position is actually pretty easy:
put your mouse pointer on one of the spots highlighted on our image (if it ended up vertically, these points will be below the start-button), hold down the left mouse key and pull the task bar back to its normal position. Release the mouse key — done.
Note that the task bar can only be moved when it is unlocked.
So if your task bar ended up in the wrong place, it was certainly unlocked. To lock it again, just right click on an empty place on your task bar and check mark look the task bar.
Now you will not see all the quick launch buttons, but you certainly will not misplace it again.