I will try to be as specific as possible.
I have deleted User Profile Service Application, and remade it many times. I think the first two times i Deleted the Synchronization first, and then the Application. (don't know if that matters)
Every time I Start User Profile Synchronization Service, it says Starting. When I go to Services and check FIM. FIM service says disabled. FIM Synchronization switches from disabled to automatic.
When I run the Powershell command.
get-spserviceinstance | where {$_.TypeName -eq "User Profile Service"}
I get...
TypeName Status Id
-------- ------ --
User Profile Service Online d8d1bed3-11be-4e42-b95d-27923dd6f794
User Profile Service Disabled e9f685dd-0fab-4782-8a21-470c5fb6fb5f
After a few minutes Both FIM's are disabled, and the powershell script returns both Disabled. Central Admin will then show the Synchronization as Stopped.