ayg, I am able to visualise the Bar on the left hand side of the screen and feel I know what is giving you difficulty in re-positioning it down to the bottom. You are opening it out in width and it is not being held for re-positioning. Please therefore, now try and follow very carefully my instructions.
Click near the centre and to the very left hand side of the bar. Then slide the mouse pointer down the side of your screen to the bottom left hand corner (where your start button was originally) and, keeping your finger held tightly on the mouse, slide the pointer across the bottom of your screen from left to right. Release the mouse the moment you see the bar shoot across the bottom of your screen.
If you will kindly follow my instructions and then post again to let me know what happens. It could be that it will be necessary to adjust the width of the bar after it is re-positioned. If that is the case, I will advise you further on what do do next.
Al.