I have a suggestion. Before you changes services start up types, let get some idea of what you can't stop.
Start> Run> type in 'msconfig' without quotes> enter> Selective Startup> Startup tab>> you can UNCEHCK everything EXCEPT the AV, firewall, touchpad if on laptop and network process if on network. Everything else can be started manually (including the printer)
When through> Apply> OK> Reboot> you will get a nag message that you can ignore and close after checking 'don't show this message again'. STAY in Selective Startup. That will retain the changes.
If these are additional programs, please give names.
Services can be changed. But when doing so, the Dependency tab must always be checked first. Let's get this done, the we can help with Services. They must be done carefully.