|'Ccleaner' has a utility which allows you disable Startup items individually.|
Open 'Ccleaner' and click 'Tools' on the left side.
Now click the 'Startup' button.
This displays a list of everything that starts with Windows.
Right-click an item and choose 'Disable'.
Obviously you will need to identify what that item does before disabling it, since it might be something you need. The name in the 'Program' column often tells you what it is, but sometimes you will need to 'google' it to find out what that startup item is for. Google pages will often also tell you if it's necessary to leave that item enabled.
If you're not sure about a particular startup item and google offers no clues, don't disable it.