Take a look at what's check marked there. If you don't need it, uncheck it, click Apply and OK when finished. Those items with check marks are things which are starting up every time you boot your machine.
I also highly recommend a tool called System Mechanic. You have to buy it, but........it’s phenomenal. I have it on every system in our home (and we have a LOT of computers in a family of 9).
Just two of its many features/functions are worth the purchase price: it’s system registry cleaner and “startup manager”, which applies a nice interface to do what jdm was suggesting. It displays onscreen every program that loads on startup and makes it a snap to see what needs to go and remove them. It also has numerous other functions, but do check it out. Worth every penney.