Learn how to turn off or change the Windows logon system sound in Windows 7.
The Windows Logon system sound plays when you log on to Windows 7.
- Type system sounds in the Start Menu’s search box.

- Select Change system sounds in the search results.

- Select Windows Logon in the Windows section under Program Events.

- To disable it: choose none in the drop-down list under Sounds

To change it: choose a different sound in the drop-down list under Sounds or click the Browse button and browse for a sound file from any of the the other sound schemes or of your own.
- Click the OK button to save the changes.
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