How to Turn Toggle Keys Tone On or Off in Windows 7
This will show you how to turn on or off the tone you hear when the CAPS LOCK, NUM LOCK, or SCROLL LOCK key is pressed in Windows 7.
By default, Toggle Keys is turned off in Windows 7.
You may also have a setting for this in the Control Panel (All Items view) when you open the Keyboard icon somewhere. This will vary depending on the drivers for that brand of keyboard has included with it though.