Weird Computer

I have IE 11 and Windows 8.1
I can not get a toolbar to appear, even though AOL Toolbar is downloaded.
I can not get my AOL email to open most of the time.
I cannot change email font size.
I have no way to cut and paste.
I lose websites that I get open, but mostly no websites open on my Dell PC.
I have a very jumpy computer, just accidently touch the mouse or whatever and it jumps to something other than what I am working on.


There is lots more, but that is enough for now.


Any info would be greatly appreciated.