How To Enable/Disable Startup Sound In Windows ?

By default, Windows 7 plays certain sounds when events occur. When you log on to Windows 7, it plays the Windows Logon sound. When your computer has to load a 500KB media file to play, it slows things down. To disable the logon sound, follow these steps:

1. Click the Start button and then Control Panel.

2. Click Hardware & Sound and click Change System Soundslisted under Sound.

3. In the Program Events box, scroll through the list and select Windows Logon and remove the assigned sound by setting it to None in the Sounds drop down list.

4. Below the Program Events list, remove the check next to Play Windows

Startup sound. 

5. Click OK and you are finished.