Stop unneeded startup programs to increase pc speed

Use the System Configuration Utility (MSConfig)

You can use msconfig.exe to change Windows' startup items.

 

The System Configuration Utility--also called MSConfig--is a useful tool for understanding and controlling startup programs. Microsoft intends MSConfig to act primarily as a troubleshooting tool, but its simple and powerful interface makes it a good option for startup management as well. 1. Open the Start menu and type msconfig into the Search box.
2. Click the msconfig search result. The utility will open in a new window.
3. Click the Startup tab. You'll see a list of programs that start when your computer starts.
4. To stop a program from automatically launching when you boot the PC, uncheck the box next to its entry.
5. When you are finished deselecting startup items, click OK. If you made any changes, you'll be prompted to restart the computer. You don't have to restart it immediately, but the changes won't take effect until you do.
When you restart the computer, MSConfig will alert you to the changes. In the window that pops up, check the box next to Don't show this message or launch the System Configuration Utility when Windows starts, and click OK to prevent future alerts. You can always return to MSConfig to reverse the changes or make additional tweaks.



taken from :
http://www.pcworld.com/article/241049/how_to_disable_windows_startup_programs.html