The only thing you can do is to eliminate things you don't need. The best tool to monitor and manage startups is autoruns from technet at Microsoft. It gives you a very comprehensive listing and enables you to temporarily disable startup items and to delete any you know you don't want. It's free and doesn't require installing, just unzip the download and run autoruns.exe. You will need to run it as administrator to make changes. Download here:
Autoruns for Windows