Does this happen all the time?
When you start the service is doesn't give you any error or starts normally?
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Symantec endpoint protections and tell me what is the startup type. It should be authomaic.
START TYPE LOADER MEANING
0x0 Kernel Represents a part of the (Boot) driver stack for the boot (startup) volume and must therefore be loaded by the Boot Loader.
0x1 I/O Represents a driver to be loaded (System) subsystem at Kernel initialization.
0x2 Service Control Manager To be loaded or started (Auto load) automatically for all startups, regardless of service type.
0x3 Service Control Manager Available, regardless of type,(Load on but will not be started until demand) he user starts it (for example, by using the Devices icon in Control Panel).
0x4 Service Control Manager NOT TO BE STARTED UNDER ANY(disabled) CONDITIONS.