How to Make a Windows System Sound Louder
A number of adjustments are required to get the optimum level of sound from your computer or speakers. Windows has a variety of volume controls in its settings and computers speakers. Volume levels can also vary by program. However, Windows has a single set of volume controls in the Control Panel, and you can change the overall volume of system sounds. On Windows 7 you can also enable an option to increase the maximum sound limit.
Edit System Volume Options
Click "Start" and select "Control Panel."
Click "Hardware and Sound" and select "Adjust system volume," located under "Audio Devices and Sound."
Drag the slider up and down to increase or decrease the volume. The master volume controls also will affect system sounds, so adjust this slider to control all sounds that come out of your speakers.
Enable Increased Volume
Click "Start," select "Control Panel" and open the "Sound" options.
Click the "Playback" tab, select "Speakers" and choose "Properties" at the bottom of the page. Click the "Enhancements" tab.
Check the "Loudness Equalization" box and press "OK" to save your changes.