If you were to right click on these items in systray you might find that you have access to the program options.
If you were to look around in those options you might find something like "load/run at startup".
If you were to untick that option then the prog won't load at startup.
There are other ways that progs load at startup but see if that will get you close to what you want.
op. syst. win me
How do i disable some of the things in my system tray from starting on start up. I have so many it takes forever to start my computer.