Cannot Uninstall SEP on My Client Machine

Hi,

Previous SEP on my client machine to normal. But somehow when I restart My Client Machine and I open the SEP icon, the notification appears "preparing to install". I then open the "services.msc" turns status and SEP does not start the notification appears like this :

Windows could not start the Symantec Endpoint Protection service on Local Computer.
Error 1068: The dependency services or group failed to start.

I made the decision to re-install the SEP, but when I want to uninstall cannot at all. notification always appear like this :

Another program is being installed.
Please wait until that installation is complete, and then try installing this software again.

please give me a solution to solve this issue ! ! !

Thanks,
Fikri Reza