I have just installed Unity 5.4.2f2 and re-installed and removed and re-installed Unity and it still does not launch fully. When I launch Unity It asks for what project to load and then disappears. When I bring up the task manager it looks like there is a Unity app running in the background using 0% CPU and two Unity helper apps running doing nothing. It just sits there for hours.
I have spent all day trying to figure how to resolve this. Any help?