Start-up services are the services that run in the background when the computer is turned on. These background services are also responsible for the time taken by the computer to boot.
Thus if you are facing the problem of slow system startup then you need to have a look at these services first. But the simpler way to manage these services is the tool called Service Tuner. Service Tuner is a utility that lets users tweak the start-up state of the background services using some presets. It is also capable of saving the current start-up state of all services, as well as restoring that saved state later time.
Apart from these advanced features, the tool lets the users have the options to start/stop, uninstall and change startup state of any service on the fly through the Customize tab.