To change the system sounds like: Windows Start-up and Shutdown sound, error notifications, system notifications etc... Follow the below procedure:
- Open Control Panel
- Under Windows XP: Sounds and Audio Devices
- Under Windows 7: Sounds
- In the Sounds tab you will be able to modify the sound events of your choice.
- First select the event in the "Program event" field.
- Next select a Sound:
- Click on OK to validate.
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