I'll try to be as accurate as possible.

I think what has happened is that my system is still set to duel monitors. I originally had two set up with Ubuntu but one monitor broke and I simply took it out. So when I use my mouse it leaves the screen to the left but I obviously can't see the screen it goes to. That's problem number 1. As a consequence of that, the taskbar does open immediately. Apparently I have to slide the mouse all the way over the other screen that would be there with the other monitor. Therefore, I am only seeing half of the screen. When I go to monitors settings, it doesn't detect my existing monitor and I can't find a way to change the system back to single screen. I hope this makes sense.

Also I don't like how the taskbar comes out from the left, I want it on the bottom.

Any help is appreciated.