Hello,
Are you trying to Install SEP Client on Windows 7 pro machine?? What version of SEP are you trying to Install?
You say, "If I double click the endpoint protection taskbar symbol on client it informs that a service is not running. Which service I may restart manual, which should start in auto mode."
That means that the SEP client is getting installed, however, you are unable to start the SEP client and it shows an error when you try to start the SEP GUI.
Could you please provide us a Screenshot of the Error Message??
Again, did you check in the services.msc, if Symantec endpoint protection service and Symantec Management Client services are running??
Please let us know the same.